Problem is, unless you do II or have isolated mating, you have very little chance of keeping anything pure, even so-called locally adapted bees will normally be within reach of some genetically different drones. So whatever you start with, after a few generations you have no idea what you will end up with in anyway.
So unless beekeepers all started working together (fat chance) with a common goal, as far as I'm concerned all these preservation projects are highly unlikely to work. All you need is one guy in the middle of it all to bring in some different queens and all the work is undone. No point moaning about it it is what it is and is highly unlikely to change. Importation is a reality like the weather or the Referee in a rugby match, you have to accept how it is and adapt to it, complaints will get you nowhere.