Sorry, it might be rude, it might be unfortunate for existing landlords, it might even be a terrible idea, but I don't see how you can call it "confiscation". If the defacto situation is maintained ownership until a decision is made to sell that is not confiscation.

If the city builds a trash transfer center right next to my house causing my property value to plummet I might be upset, but nothing has been confiscated from me because I do not own "the character of the neighborhood" except in some small collective part.

Confiscation, it is not, anymore than negative reports are confiscation of stock. You can liquidate and acquire a different asset. Personal preference has rarely been rewarded (re: eminent domain). There are windows of opportunity, timing and strategy inherent to capitalism. Sell before it passes (or the market adjusts) to maximize your realized asset value.