I think the idea is that employees make most money from the profits paid to them as owners, instead of an increase in the stock price and then selling.
Employees that can sell shares at any time have the same financial interests as with any other corporation. As much reinvestment as grows value faster than the overall market is how much is best to reinvest.
Distribute the rest to owners to use/invest elsewhere.
It sounds like this is a much healthier concept overall?
Dividends don't have to be sustainable. There are companies that are gutted and liquidated to pay out dividends too.
That's in the second paragraph. I don't know what the fixation is in finding problems with paying more the people who produce what the company sells.