I’m one of those people. Moved from VT to NY and have 3 vehicles, chose to keep them registered in VT because of multiple reasons. Cheaper registrations, cheaper insurance, I can take insurance of the cars I’m not driving for the winter without having to surrender the plates, I like the look of the VT plates more, don’t want to pay new registration fees on 3 vehicles. Some day I’ll probably move it over but for now there’s not incentive to change it over yet.