The civilizational perspective.
We're biologicals hacked to do civilizationally productive tasks. As humans, we generate civilization, and are molded by civilization. A lone human is not very capable, but when you put of bunch of us together, we start generating civilization and the civilization starts driving our actions.
But in the end, you need to hack us to become civilizational agents. Education, jobs, creed, control, systems of reward and punishment around civilizational tasks. We're not purpose-built for civilization. We just happen to generate a bit of it and be pliable enough to benefit from it.
Our civilizations have other biologicals inside them. The biggest one are the crops. The greatest megastructure we have created, farmland covers 39% of the Earth's land area.
Then we have other biologicals, used as food for the civilization-generators. And some other biologicals, used as weapons or companionship, or for hard labor. The hard labor type is interesting, as they got obsoleted by more purpose-built civilizational agents. No more need to hack large land mammals to provide high force output, speedy travel, or fast communications when you have internal combustion engines, electricity, cars and telecommunications. Sure, the purpose-built agents don't match the general capabilities of the biologicals in many ways (have you seen a car jump over a fence?), but the civilization can adapt the environment to make the best use of the new agents. So you get road networks for cars, even though they're not great for horses. Instead of traversing rough terrain, you make the terrain suitable for cars.
The end result: the more generic, high-maintenance biologicals that had to be hacked to work in a civilization became obsolete and almost completely vanished in a few short decades. Horses, elephants, carrier pigeons, work oxen, cats for pest control, hunting dogs, they're all mostly gone. Some of them could be adapted to work in the civilization. The rest? Cost of maintenance exceeded the value created.
Companies are not going away. Companies will evolve their work provider mix to move the generic agents out of places where specialists do better. Happened with computers (people who would sit at desks and do arithmetic), commercial illustrators, telephone switch operators, frontline customer service agents, designer prototype developers, report-collating middle managers, Instagram thotties, rendering artists, videographers, politicians and soldiers. We plug specialized agents into negotiation flows, into persuading people to do what the persuader wants, thinking outside the box, throwing out the 1000 concepts to surface the 1 good one. Civilizational work, civilizational tasks. Who does them is of no relevance to the company, the company that grows the fastest is the company that matters in the end.
Growth math.
If you grow every year 1% faster than your competitor over a 100 years, you'll be 3x bigger in the end. Repeat for another 100 years and you'll be 7x bigger. At which point you can either acquire your competitor outright, or they'll have changed to match what you're doing. Either way, they've become irrelevant.
If an organization grows faster the fewer humans it has in it, the organizations that end up taking over are non-human organizations and we'll have fewer humans because the cost of maintenance exceeds the value created. If an organization grows faster the more humans it has in it, we'll have more humans.
We've been at point where an increase in the number of humans has not brought economic benefits. This is what's behind the fall in population growth. If a higher population would make the civilization grow faster, our surviving civilization would be the one that maxed population growth rate. This was the case in the 1900s: very rapid population growth hand-in-hand with economic growth. In recent decades, economic growth has outstripped population growth, and even become negatively correlated with it. The faster your population falls, the faster your economy grows.
This trend of non-human civilization has been going on for the last hundred years and will keep going because of a couple of facts. The civilizational work that we humans can be cajoled into doing fall into a few categories: intake of information at a few words/s, taking actions according to the information, storage of information at a rate of a few words per day, processing information through fast heuristics and very slow structured thinking, exporting information at one word/s, picking up and manipulating small-to-medium-sized objects (2mm to 2m in size, 1g to 40kg in weight, at around 1mm precision), walking around at around 4km/h for a few hours a day.
A lot of the mental things that are very difficult for us to do have been replaced by purpose-built agents with great success. The device you're using to read this is doing more calculations per second just to display this text than the entire human population can do in a year. The millions of tiny lamps that comprise your screen are turning on and off so fast and with such great precision and synchrony that all of humanity could not match it.
At some point, growth math takes over. We feral humans will still generate civilization as we hang around each other, but the fastest-growing organizations are the ones with the biggest civilization and the fewest humans. The fastest-growing organizations may be the ones with no humans in them. How many cows or horses do you see in your office building? If they made the companies grow faster, you'd see them around. But... you don't.
Hacked biologicals have an upper limit of civilization work they can do. Is it worth it to sacrifice 39% of all land area just to keep the biologicals around? Is it worth it to constrain energy production to control surface temperatures just because the biologicals can't handle an extra ten degrees? Once a non-human civilization is 10x the size of a human civilization, they can just buy us out. Pay $10M per acre of farmland? Sure. $10M for a flat? Sounds like a fair price. $1000 for a take-out dinner? Yeah, good. First we'll be priced out, and then left to fend for ourselves in an increasingly constrained and human-hostile environment.
Yeah there'll be humans around. We're like seagulls circling behind the great ship of civilization, eating whatever emerges from the wake. The ship will be bigger, the wake will be bigger, there'll be great eatings.