So who gets to decide how much profit this person is allowed to make? Maybe he wants to save for his kids college or against a recession? He is taking the risks (leases, capital tie up, etc.) he should be allowed to decide his payout. Most restaurants run super lean and have high failure rates. The long term effect of these laws is yet to be seen.
It is also unclear to me why we expect an unskilled worker at McDonald's putting fries into a basket to make a "living wage". These jobs are largely for students, retirees and other temporary workers. A high minimum wage isn't the way to end poverty, no taxes under $60K, needs based UBI and other tax incentives are much better options.
The issue is that business that employ unskilled labor will tend to raise prices but rich people don't shop at WalMart; poor people do. So great, they make more but their buying power may have actually gone down. This is the conundrum. Everyone wants $40/hour unskilled manufacturing jobs making throwaway products that they can buy at the dollar store. You can't have it both ways. People really want buying power, not necessarily higher wages.