Hyperscalers and SPVs are still planning on accelerating the buildout in 2027. Also even if everything hit the fan tomorrow, it will take time for production to shift back into consumer products if that's even what companies decide to shift to.
Anyone that can open their computer to install an SSD, or a consumer-grade GPU, can install a data center GPU with a fan-kit; it's not rocket science.
I've also seen someone sell their old fanless Nvidia cards on the local marketplace. There are definitely consumers running these things in their basements.
Most of the common used datacenter cards have people just 3d printing blower fan shroud attachments. Or using 3M/Gorilla Tape.