So I've been reading about this SpaceX push for a $1.75 trillion valuation, and honestly, the orbital data centre angle is wild. They're basically saying: forget fighting local governments over land and water usage—just put your servers in space instead.

Here's what's actually happening. Terrestrial data centre expansion is hitting real friction. Communities don't want them anymore. Too much land consumed, too much water for cooling, insane energy demands. It's becoming a political nightmare. SpaceX sees an opening: low Earth orbit has none of those problems. No zoning boards, no environmental reviews, no angry residents at town halls.

The engineering is absolutely brutal though. Managing heat dissipation in a vacuum? Protecting electronics from cosmic radiation? Keeping everything running when you can't physically repair it? These aren't minor details. But here's where it gets interesting—Musk and others are betting the social challenge on Earth is harder than the technical challenge in space. That's a fascinating calculation.

What gives SpaceX an actual edge is vertical integration. They're not just talking about data centres in orbit—they're the launch provider. So they book revenue both ways: launching the satellites and operating the infrastructure. That's a self-reinforcing loop most competitors can't replicate. Amazon's exploring it through Blue Origin, and there are startups getting funded (Starcloud hit unicorn status on $170M), but SpaceX's position is structurally different.

That said, the real constraints are brutal. Heat rejection through radiation only. Extreme radiation hardening costs. Launch expenses are still enormous even with SpaceX's improvements. And realistically? This probably becomes a niche play for latency-tolerant or geopolitically sensitive workloads, not a replacement for ground-based data centre infrastructure.

The IPO narrative though—that's what matters for valuation. Investors aren't pricing this on current launch revenue. They're pricing the future story: SpaceX as multi-planetary infrastructure company. A data centre in orbit sells that vision perfectly, even if the economics are uncertain.

Will it work? Unknown. Depends on crushing launch costs further, breakthroughs in space-hardened computing, and whether AI demand stays as hot as expected. But as a narrative justifier for a massive valuation? It's doing its job right now.