From the StackExchange link: So big in fact that a couple of months ago the US space agency NASA, having looked at SpaceMobile's plans, complained the "extreme

From the StackExchange link: So big in fact that a couple of months ago the US space agency NASA, having looked at SpaceMobile's plans, complained the "extremely large satellites when in orbit will engender an unacceptably high risk of a catastrophic debris-producing collision." I don't know enough about this area to really comment, and they did reach an agreement with NASA the next year, but it still seems like there's something to be said about the size of the object being maneuvered. You're right though that SpaceX has to deal with a lot more. I guess I just figured that in failure scenarios they'd deorbit a satellite, and shrug it off, where as AST SpaceMobile can't tolerate losses.