Which implies that you cannot reasonably serve the "disfavored" cohort (self-funded startup or small business). In other words, you have admitted that I was correct in that the business model is deliberately aimed at businesses that likely can absorb surprise expenses, and it's not appropriate for others.
We probably have different definitions of "small business". At any rate: my only point here is, it's not our business model to earn a premium off surprise bills. Railway does hard billing limits! Railway's great. Use them! I'm not here to sell you on Fly.io.