Everything is more international nowadays. Not sure this is a problem at all?

Kessler syndrome is far more likely to be caused by war than progress in satellites. Space is big and sats are tracked and powered nowadays. How about we stop starting wars instead of stopping progress?

Space based telescopes are going to be vastly more useful and popular than land based telescopes today.

As costs come down dramatically access to space is going to expand rapidly, that is a good thing, not something to fear.