The concert analogy makes sense (I analogized it as "staunching the bleeding").
WRT SpaceX building data centers: I think there's a natural tension between a "low margin business" and "being risk adverse". SpaceX (the rocket business) did well because it was high risk and high reward. Building a 10b datacenter to hope to get a slice of a low-margin industry is high risk and low reward and just seems fundamentally like a losing strategy.
It's not like Elon is a stranger to low margin. Making cars is low margin, and it's not like SpaceX has crazy margins now that we know the financials.
Also I think stuff like Hetzner is a commodity. But are gigawatt scale data centers a commodity? You need those for AI training.
Anyways their goal is datacenters in space, not traditional data centers. Although I think that's only viable for inference.