A huge part of why the ISS has to move because the uncertainty of the objects is to high. If we can get much more accurate measurements many of these issues become far less important.
Currently its really just the us military who has radar for this. What we should have is multiple nations each having multiple radars.
Beyond that, the next step is laser based ground station that can both get far more accurate measurements and potentially move the items as well. ESA is working on a demonstration of such a system. Again, it would be best if multiple nations had these.
From these two tools we can create a real accurate shared global database with very accurate measure. This alone should massively reduce the amount of near collision events.
Then beyond that we can start to launch missions to actually capture debris from higher orbits and throw make it burn up. ESA has also planned a demonstration mission for that.
To really do that right we really want to have a reusable space transporter that can be refueled from some sort of cheap space fuel truck that can ride along on SpaceX flights.
We can figure this out. Some DoD people have already talked about putting a price on individual objects so a commercial garbage removal market can start to happen. And with SpaceX Starship launch prices should get down to prices where these things can be done much cheaper.
If you speak German this is a great resources: https://raumzeit-podcast.de/2020/11/17/rz092-weltraumschrott...