Yeah, the idea that there is somehow Unlimited Demand to tap is just woefully underexposed to business realities. Demand at most businesses is a river, not a municipal waterline with a spigot at one end. It ebbs and it flows, and building for a hypothetical high-demand future is what you do when you have venture capital expecting it of you--not when you're building a "small business" (or even a medium to large one, if you want to be resilient).

It is, however, a really convenient excuse for people who don't regularly think about how people who don't work "above the API" actually exist in the world.