I think thats too pesimistic - indeed, with current sats limited by current high launch costs to no or low available delta-V, it would be difficult. With more a

I think thats too pesimistic - indeed, with current sats limited by current high launch costs to no or low available delta-V, it would be difficult. With more advanced hight delta-V sats & tugs to move dead sats it should be perfectly possible to avoid collisions via active guidance.