But startups are worker-owned, insofar as the founders are able to profit from it.
Some startups are worker-owned through stock grants, but those grants are rarely evenly distributed. The founders hold the majority as long as they can.
It is a good practice for companies to include stock as part of the pay package. It encourages alignment of the company with the employees. Very, very successful companies follow this model, such as Microsoft, Apple, Amazon, Google, etc.
It seems to indicate that if Amazon was employee-owned today, the first thing they would vote to do is convert future hires into non-owners, because that's what the founders did when it was actually employee-owned.
Not entirely sure what you're saying here. Amazon still provides stock to employees as part of the comp package, AFAIK.
Bezos started Amazon with $300,000. I'm sure it wouldn't take too long for workers to raise that kind of money, after all, $300,000 to buy a house is considered cheap.
On the other hand, the history of businesses being confiscated and handed over to the workers has not been a successful one.