I worked this out in great detail, it took about a decade to get the bugs out. The problem is that it works well for founders and other people interested in the mechanics of running a company but it emphatically does not work for people who would rather 'just be paid'. Not everybody wants to be an active participant in the ownership portion of a company, plenty of people simply want a job and a paycheck and that's it. (And to make it explicit: there is absolutely nothing wrong with that, just like not everybody needs to know or wants to know how to fix their car in order to be able to use one.)
I have no doubt there are people who would rather just be paid, probably the majority of people. But that still leaves a lot of people to do this sort of thing.
Also, as the companies grow a bit larger and mature, they should be fine for the "just want to be paid" folk, as that is basically how it would work.
Also, I would hope that most of the mechanics would just be handled by the system. At least the tedious stuff. Stuff like voting on company/product direction, and rating your peers seems like something everyone would like to participate in, especially if it doesn't become political (in a bad way).