I'd go as far as saying it's a selling point, not just a compromise. Flexibility now can come at the cost of vertical scaling when it's EASIER to get funding and when you will probably have cash flow? Hell yeah. Compared to preemptively hyperscaling at an initial high cost, or using a possibly non-existent mythical framework that is somehow hyper performant, low cost, and as flexible as Rails etc... I know what I'd go with.
I’m pretty sure the decision to use Ruby On Rails instead of another platform for building my web applications is not in fact the reason why there is climate change.