Where I live (Seattle) we've passed minimum wage law increases ($15, on a 7yr schedule) that has already resulted in many restaurants adding an automatic & non-optional 20% gratuity to checks, where the fine print says it will be shared between front & back staff.

So yes, there's an organized effort and it's making a (slow) difference in shifting the culture of companies under-paying their employees and expecting customers to make up the difference.