Until then, it’s like the stuff Boeing, Lockheed, ULA etc. have spent even longer developing and have also not reached orbit with.
True, but it isn't as if SpaceX doesn't have a track record for hiring some pretty ambitious targets with their progression of Falcon 1 →Falcon 9 →Falcon Heavy. Admittedly, Starship's planned use of the new Raptor engines seems risky, but the DOD did fund a prototype-and-test contract that presumably concluded successfully a few years ago. While the results of those tests aren't public, there have been no leaks to the contrary, at any rate, and no changes in the planned use of Raptor have been announced (and SpaceX hasn't generally been at all shy about announcing changes to their plans).
I think it's a pretty safe bet right now that Starship will launch and that they will get it working reliably, and that they will have to blow up a few along the way to make those things happen.
I doubt you or anyone else would bet significant money that Starship won't reach orbit. If so, I'd be happy to accept.
For the record, I don't think you can point to any project even remotely equivalent in terms of capability or progress from Boeing, Lockheed, or ULA. I'd be happy if they were doing nearly as well as SpaceX.
My other examples: Starlink, Tesla, and Dragon have clearly been "built" and shipped. Starlink is the hands of consumers, is actively helping Ukraine for military and humanitarian purposes, Tesla has shipped millions of vehicles, and Dragon Crew had another successful rendezvous with ISS days ago.
I could spend a lot more time providing examples but consider these to be more than sufficient to disprove the claim that Elon Musk's companies haven't "actually built anything he announces" in "years".