The crash will come once average suburbanites stop protesting everything denser than a half-acre single-family home and city councils realize that mixed-zoning is far more sustainable.
There were not unsurmountable government restrictions (obviously). There was no real demand for it. The housing demand was largely speculative, people investing in houses because "prices never go down". Often, they didn't even get rented - why bother, if the valuation of your "investment" grows faster than what you can get from rent?
In markets like these, huge increases in supply don't drive the prices down. Hoarding, speculation and housing flipping absorb everything that gets built. We still have insanely high housing prices today.
So conversely, the crash will never come as long as average suburbanites continue to protest everything denser than a half-acre single-family home? Because I wouldn't bet on human nature changing any time soon.
That said, I also don’t own Tesla because I think it’s crazy overvalued.