To be fair, enterprise SSDs (particularly U.2, U.3 and E.1L) have had their own availability issues for a fair bit now, particularly the latest NVMe PCIe Gen 4 devices. However, the problem there isn't cryptocurrency, but hyperscalers having had exclusive periods to buy directly from the manufacturers. Which they have. At immense scale. Some drives announced nearly a year ago are only now hitting the retail and VAR channels.

High-speed DDR4 ECC memory (DDR-3200 in particular) can also be tough to come by. A fair number of VARs actually limit quantity (usually to 20 modules per SKU), since it's so tough to get. Again, not due to crypto mining, but because of hyperscalers.