A million new SpaceX satellites will destroy the night sky — for everyone on Earth

https://lemmus.org/post/21093378

LEO satellites decay very quickly every one of them will burn up in the atmosphere within 10 years. They need to be replaced constantly. As soon as spacex goes out of business these will all fall out of the sky.
I expect that we will get in orbit refueling to extend their life once you get a good nuclear and solar panel power tug with an electric thruster that can deliver fuel, they’re in a similar orbit if you just do that.
Especially with the number of them it’s probably cheaper to just put up new satellites. LEO sats are designed to be temporary.
Cheaper and easier to upgrade the constellation to newer and faster tech. If you have backwards compatibility, you just start launching v2 and v1 will eventually just burn up, and hopefully finish just in time for v3 to start launching so you only have to be compatible with n-1 versions.