These payment methods are pretty similar to Sander’s ideas EXCEPT for the business aspect of paying for healthcare costs. While the Sanders plan suggests a fixed percentage across all wages and applying to all companies the Warren plan pretty much loads the business portion onto the companies that pay for employee health insurance today.
That in my view, creates a dichotomy of how some businesses would pay more than their “fair share” because they have done the right thing in actually covering health care for their employees while many large companies that rely on part time employees to dodge paying healthcare (hello Walmart) would effectively get a pass.
In this respect I find the Sanders plan as a better method. It’s important to treat business .. all business .. fairly to prevent gaming the system and encourage business growth.