Things placed in low earth orbit (where small launchers can put satellites) will de-orbit and burn up in 2-5 years from drag if they have no way to maintain the

Things placed in low earth orbit (where small launchers can put satellites) will de-orbit and burn up in 2-5 years from drag if they have no way to maintain their altitude. This isn't a problem future generations have to worry about. Geostationary orbit is a place where stuff can stay for thousands of years, so space junk build up could be a problem out there.