I think it's inherently problematic that ownership change is permitted (and not even in any way regulated), but moving isn't.
It seems exploitative to say the least to receive permission for something under one owner, then move it to another who never would have received that permission in the first place. Goldern Coin actually roleplayed this whole process out deliberately, and I'm sure many of us remember the joys of that particular POB.
It isn't unreasonable for, say, a house government to request a (minor) move together with the new owners of a base. Not cross-system, just something like <10k. It doesn't seem like it would be catastrophically difficult to decide on a case-by-case basis if such a request is legitimate.