Micromanaging a bunch of people who don't care about you or your values isn't cheap. You can either pay in dollars or in blood. The wealthy suburbanites and urbanites who want to see the brown folk in Fall River or the hicks west of Worcester march to the official state tune don't really have the stomach for an endless supply of "the tragic turn of events all began when State Trooper McFakeTimeCard pulled over Mr. Lopez, 36 of Springfield for an expired inspection sticker..." type news stories so it's no surprise that the "US in Iraq" approach gets chosen over the "Russians in Syria" approach.
<shrug>
Only thing that ruffled my feathers at the end as a MA resident was the solution being additional personnel to monitor a non-problem.
Yes it gets people out of cars, yes it's progressive.
But on the other hand, you don't get much signal of how it's actually valued. And if it is valued, surely it turns regressive by gentrifying areas served by free transport, forcing the poorest away.
Not that I think public transport should be for profit.