SpaceX's next-gen rocket, Starship, will have a 9 meter fairing and aims to be able to launch 100 tons into orbit for ~$10-100/kg. They also plan to support 3 launches per day. LSST has a primary mirror that's 8.4 meters wide, so something like it could potentially fit. Enormous radio telescopes can be constructed from a large array of smaller satellites via radio interferometry.