I worked at a very successful company that used a similar model: flat 50% of profits paid to employees as bonus. This worked fantastically well in the short term. Now, 10 years later, the company is still very successful but the upside has all shifted to the owners due to departures, renegotiations, and new hires not getting the same terms. So at 3 years it looked very pro-employee but at 10 years it looks very pro-owner.

Would have been really "interesting" if there had been a liquidity event...