Most of the abstractions, frameworks, “bloats”, etc. are there to make development easier and therefore cheaper

That's true to an extent. But I've been on the back side of this kind of development, and the frameworks can quickly become their own arcane esoteric beasts. One guy implements the "quick and easy" framework (with 16 gb of bloat) and then fucks off to do other things without letting anyone else know how to best use it. Then half-dozen coders that come in behind have no idea how to do anything and end up making these bizarre hacks and spaghetti code patches to do what the framework was already doing, but slower and worse.

The end result is a program that needs top of the line hardware to execute an oversized pile of javascripts.