The usage of bitcoin world wide have got its importance, but we can't be sure that the price gets direct connect with the increasing acceptance and usage. As the market revolves around the demand to supply there is chance of price reaching high. Already the price have reached around $70k, based on which the price reaching $100k isn't a big deal.
Everything need its time, and every market have got its own growth pattern. This can be a cyclic process that have dependence as well as independent move from the traditional market which makes the real reason behind the growth. If we were able to address it then we can be sure on how price could reach on increasing acceptance.
I agree with you, that 100k is not a big problem for bitcoin to achieve, because when bitcoin is at this point now bitcoin has reached its ATH, and of course bitcoin will always grow periodically. And personally I believe that bitcoin will reach its ATH again, although I can't predict exactly when it will happen.
Especially if many countries finally legalize bitcoin, because at times like now that get a lot of rejection in various places, FUD is heard everywhere, bitcoin can always grow in its own way.
As you said, everything takes time, and there is also a process that must be passed, whether it's a problem, or anything else that makes the price of bitcoin plummet. But believe me bitcoin has a way to come back.