Tangentially to that, I've worked at exactly one place that had a really good profit-sharing system. On paper, everyone had a relatively low salary. But, at the end of the fiscal year, they'd tally up the profits, divide them up among the employees, and cut everyone a check.
(Naturally, this was not a publicly-held company, nor was it financially beholden to any venture capitalists. One rarely finds much equity in extractive economies, regardless of whether the thing being extracted is mineral resources or intellectual resources.)
There were a few peculiar social phenomena that might have been attributable to this setup. One was the natural culture of collaboration and relative lack of office politics.
A more interesting one, though, was that people rarely worked any overtime at all. My guess as to why is that more traditional pay structures encourage more ambitious people to overwork, because it sets up a situation where employees feel a lot of pressure to compete with each other for raises. (And it demotivates other people, because they understand that any level of productivity in between the minimum, and whatever it takes to get ahead in the rat race, is wasted effort.) If the rising tide really does, obviously, visibly lift all boats, though, then there's no particular need to treat your entire career like a Black Friday doorbuster.