Perhaps through some kind of all employee profit sharing system that all the employees agree on. Alternatively, if there has to be ownership, ownership of the company can be split between all employees, and the profits shared amongst them accordingly.
I should divulge that by HN standards I am a screaming commie. I think unions are a good idea, and I think inheritance tax should be pretty much 100%. I'm not necessarily in favour of this employee-owners profit redistribution system, but it's an answer to the question of where profits should go if there are no rentier shareholders.
By what standard? Does a new employee get the same percentage as every other employee? If so, how is that fair when certain positions objectively have much more impact on the success of the company? If not, who decides allocations for new employees and who the allocations should come from?
Also, who is going to put up the capital in the first place to start the business if there is no return?
These facts would appear to contradict your statements.