For example, many projects only need a container or VM with 512MB of memory and one CPU core.
"Just wanna email, word process, and some web and some gaming" has relatively recently gone from a kilobuck P4 couple hundred watt space heater to a hundredbuck tablet that needs charging every couple days.
Unless you all can find a way to make silicon more expensive or dramatically increase processing demand, all these elaborate schemes to dole out processor are doomed to something like the per minute long distance business model where eventually more money was being spent on detailed billing than on actually providing the service... When the TCO of an elaborate virtualization system and its provisioning and billing and firewalling system exceeds the TCO of just spinning up a ubiquitous cheap low power system on a chip...