I would hope with all that mass to orbit you can also work on space debris cleanup. For example using lasers somehow.
The energy and velocity and economics and distances just don't add up for that. (I would love to be wrong)
Solar powered satellites in counter-rotating orbits. A low powered laser focused on the leading edge of a piece of debris will (very) slowly bleed velocity until it drops into a decaying orbit. It'd be exceptionally slow, but with machine vision you can just let it auto-acquire targets unattended for a few decades or centuries.
Do you have any ideea how fast debris passes by (or hits) in a counter-rotating low orbit?