I think bitcoin will not touch 40k- 50k $ if you look at ath 2017 it is very unreasonable that it will likely return to a price of $ 15000
We are in a different territory now, I don't think the past movement will have something to do with how the market performs now, things is very exciting now we have institutions coming in, many new concept are being hatched like the Decentralized finance, we are creating new history and story and a lot of new records.