I guess I’ll have to buy one of those racks when the bubble pops. Just add an LED strip on the outside and a gaming GPU on the inside. Surely they support PCIe?

Oddly enough ECC used to be quite common for consumer hardware…I had an old Mac desktop in the late 90s/early 00s with ECC memory. But at some point it was decided that consumers don’t want to pay the extra $ for error-free RAM and mobos largely dropped support.

Edit: reading up on it the G5 (which I had) required ECC memory

Eh, the market will adapt.
I've been looking at components on AliExpress. Even now, there's lots of X99-based motherboards with LGA2011-3 sockets that can take both regular DDR4 (with some limitations) and ECC DDR4.
But the descriptions are quite hard to understand, and they are apparently quite picky about which RAM will work with them.

I could get a combo of one of those motherboards with 2 Intel Xeon E5-2680 V4 CPUs (2.4GHz, 3.3GHz turbo, 28 cores, 56 threads in total) (hey, a dual CPU motherboard) for €120. And it's got 8 RAM slots. So 32GB just with cheap 4GB sticks.

So that's why consumer drives and ram are not affected by the price rise! /s

Unbuffered ECC DIMMs can be used as-is even on PCs not supporting ECC

Registered DIMMs can be unsoldered and the RAM chips reused in a pinch converting them to unbuffered DIMMs I suppose?

But reports of manufacturing capacity being moved to HBM will not benefit consumers if the bubble bursts.