Part of the problem with upzoning is that for people who are not going to redevelop because they like their house or they do not have the financial means to do so, and are also unwilling to sell, they get no monetary benefit from the upzone.

In some jurisdictions, this is alleviated by allowing the sale of excess zoning capacity to others, which now gives people in that situation a way to realize monetary gains. https://caldwellcommercial.com/understanding-commercial-real...