I was thinking of upwards price pressure on housing stock in those communities as the main negative effect. Rationale being that tech salaries are going to be significantly above incomes the local economy supports and thus tech workers are going to be relatively price insensitive.

That said, remote work is hardly the only thing contributing to this problem. And I agree with the idea that changing housing policy is the best way to address it.

I don't dispute that there will be positive effects as well. They seem less significant to me.