I'm not sure that's the case. There are plenty of examples of bad guys being present but too powerful (or wealthy or connected or whatever) to take down until the hero(es) gain enough power of their own (or allies or the MncGuffin) to finally defeat them.Competent With Little Change, but Zero to Zero.5, Always Powerful But No Progression and similar options work for me too.
I just really dislike vast power level growth. It makes things that I like a lot (like, for example, actually having an antagonist), for all intents and purposes, completely impossible.