I’ll tell you what was the cause of my (former) skepticism on this issue:

Every proposed solution to it was indistinguishable, except in name, from the standard Leftist and Statist wish-lists that we all see from time to time. If the proposed solutions actually attempted to address the problem or mediate the effects, there’d be fewer folk raising a squawk about the underlying phenomenon. But as it is, it all looks very much like a nice tax-hike and revenue generation system in a green wrapper.