Think of it from a small hobbyist perspective: I want to host a few small workloads, but I don’t want to deal with reoccurring billing. Maybe I have money now, but can’t guarantee it later. With this scheme, I frontload with a substantial amount of prepaid credits - say, $150 - while only using $5 or $10 a month. In theory, if the interest rate is correct, I could earn more on interest faster than the prepaid credits get drawn down - thus having a perpetual instance for a one-time charge.
Personally? I think that’s a fair and reasonable arbitrage opportunity, because it also means the vendor can take that excess Capital and invest it themselves to create a return greater than the credits paid out. In practice, some greedy jerk C-Suite inevitably places caps on payouts or time limits on credits to ensure they capture more for themselves and leave less for their customers.
I guess what I’m saying is that I dig the idea, I’d love to see it implemented by more vendors, but I also know it’ll get rules-lawyered to death in nanoseconds under the current market incentives.