> The only reason people think otherwise is because because of alleged technical infeasibility.

Some people think otherwise because they trust each other, and understand that specialization allows efficiency and economies of scale.

Even if it's stupid easy to run five servers at home, there's sure to be one person who likes maintaining them more than the other four.

It's stupid easy to load and unload the dishwasher, but my sister didn't like handling the dirty dishes and I didn't like running around and putting them away, so I loaded and she unloaded, and we were both slightly but meaningfully better off on a daily basis because of it. Of course we could each just load and unload our own dishes, but a slight reduction in independence and freedom (counting on each other to do our part) improves things for both of us.

People often--I'd even say usually--work together because they benefit from it, not just because they lack the technical chops to do otherwise.