Sure, and no one is saying that people should stop experimenting and testing out alternative approaches. But we wouldn't expect to see experimental approaches displacing established conventions in mature use cases unless they actually
are major breakthroughs that unambiguously improve the status quo. And in those situations, we'd expect the new innovations to propagate rapidly and quickly integrate into the generally accepted conventions.
But there's obviously going to be something analogous to declining marginal utility when trying to innovate in mature problem spaces. The remaining uncaptured value in the problem space will shrink incrementally with each successive innovation that does solve more of the problem. So the rate at which new innovations propagate into the mainstream will naturally tend to slow, at least until some fundamental change suddenly comes along and modifies the constraints or attainable utility in the context, and the process starts over again.