Not Austin per se, but an interesting article that talks about some of the cons of mass tranist systems, and how LA is trying to address those issues:
In diverse, working-class neighborhoods across Los Angeles, an unprecedented $40 billion mass transit expansion is being met with mixed emotions. On the one hand, low-income residents are by far public transit's biggest users, and expanded transit routes promise greater mobility and better access to job opportunities. But the very real prospect of displacement and gentrification looms. Studies from around the country show that as public transit improves, housing costs in the surrounding area rise, and low-income residents, often in communities of color, are priced out.