As someone running these workloads I'd only be desperate enough to pay $250/mo for a 3090 today because I cannot buy it for $1500 at the store straight up. And if you drop the price by a third now it isn't worth it for the host anymore.
I do wonder if what's charged for electricity and premium can be competitive with large data centers in the long run. Amazon already has spot pricing. I expect it would be favorable for consumers with cheap electricity or who are already paying to heat their house.
I also wonder what effect renewables increasing electricity spot price volatility might have on this market in the future.
Even if we didn't have an open ticket with Azure since Christmas for more GPUs, the ability to burst non-sensitive tasks on say 20 cheaper GPUs for 5-30 min is attractive.
That stuff adds up fast, and lowering cost both opens accessibility for low-end users and helps scale what power users can do.
My bigger surprise is vast has been around awhile and only ~20 available servers, so I'm guessing < 100 total. Is this a friction issue?