Relativity Space had a really interesting idea even before Eric Schmidt bought it. The key ideas were new technologies in 3d printing of designs for rapid iteration of design-to-implementation on what was previously extremely difficult (rocket engines, rocket bodies).

They even called their printers "Pylons" if recall (a nod to StarCraft's Protoss). The manufacturing tech has far broader implications than the application they were putting it toward.

My worry is that Eric bought them solely to get launch-for-compute in his pocket. Given his track record of "steal and when you get caught just have the lawyers 'clean all that up'" and "we didn't intend to unleash evil on the world, 'but it happened'" aren't encouraging. I always hope the golden goose doesn't get carved to pieces, but it usually happens.