To give the current owners the chance to do the right thing, and make a small but reasonable gain from their property.
And to make it more palatable to the general public. It's a lot easier to convince people to go along with it if you're seizing empty unused properties that are only empty and unused because the owner refuses to rent them if they're not making excessive profit.
Epstein files are the only thing that's maintained even a tiny bit of traction among his supporters and made some of them...well I'd say think twice, but that implies thinking a first time.