One of my homes is in CA where I spend a lot of time. I basically never eat fast food in CA anymore because it currently borders on authentic cuisine restaurant prices.
I can get a meal at a fast food joint or go to an authentic Italian or Mexican restaurant, etc. and pay a couple bucks more. If I got time, what am I gonna do? It's stupid to do fast food in CA if you got some time on your hands. The last place around here I can think of that has a decent deal is Rally's and that requires a coupon from a local grocery store.
That's cool, pay them $100/hr. Whatever. This will just ensure I never do fast food in CA unless I have zero options and my arm suddenly looks appetizing. Go for broke, pay them $1000/hr.
What is already happening is cutting people short on hours so they aren't eligible for benefits unless you're a manager. And that happens outside of CA, even. This will almost virtually ensure that the average fast food worker will not hit 32 hours in a week. In fact, even outside CA, I know some fast food joints, like a McDonalds in particular, that works with their employees to make sure they're not getting overpaid so that they can retain their government assistance.
What other results are going to be yielded from $20/hr at fast food chains? Are some of the companies going to bounce? I don't know. But I know this is wonderful for the regular restaurants, and some people are eating healthier due to it. Pay the workers a million bucks per month so I can be entertained by the fallout, let's do it.