The Austin situation is too far gone for projects like these to make a dent. Plus, people who can afford to live downtown would much rather have land out in Westlake.
The solution to the housing crisis, much as I hate to say it as someone who's a fan of infill and transit, is more single-family homes. At least here. People want to get out of renting and start families, not another apartment but this time 15 stories up and far from an HEB.