Those people who are "forced" to leave will be the same people who couldn't keep up with paying the same real estate tax as their neighbors, but still enjoying

Those people who are "forced" to leave will be the same people who couldn't keep up with paying the same real estate tax as their neighbors, but still enjoying the same prime location and municipal service. At which point, one of the two things will happen: (1) Housing price will fall down because there are more on the market. (2) Or, the houses will be snatched up by people who can pay the price, many of which are young couples working in high-paying industry willing to start a family. It will cause net population increase. Or, even better, they can be replaced by dense residential blocks. Either way, it sounds like desirable outcome to me.