> all companies paying for computing resources will have to pay roughly 30% more overnight on cloud expenses

Well, if I rent a VPS with x performance, I still expect x performance after this flaw is patched. The company providing the virtual machine will perhaps have to pay 30% more to provide me with the same product I've been getting.

Since most VPS offerings arbitrage shared resources, this will not increase costs of providing VPSes by the full performance penalty.