Re:NASA objects to new megaconstellation, citing risk of “ca...
by londons_explore on Tuesday November 03, 2020 @05:46AM
(#24978362)
With a 900 square meter antenna array, they'll deorbit pretty quick.
I'd guess that's the reason they're at the altitude they are - at lower orbits they'd decay too quickly.
The other part is that there aren't any orbital tow trucks to get rogue or broken satellites out of orbit or out of colliding paths. Plus since you never know where it might happen, and the delta-v would be pretty extreme to go very far or very fast, let alone both which would be needed to prevent a collision of an out of control satellite.
The penalty of screwing up could be large, and there aren't many mitigations available.