BTC shot up so high so fast in 2017 because it was overly hyped that even people who don't know a single thing about it just registered a Coinbase account and did a buy order.
So you're question is: "Why.... it is not boost up again.......". Simple, it's because not that much people are buying bitcoin. And if you're not willing to wait for another price rise that's hopefully a lot more sustainable, then go sell your bitcoin. Investing is not for the impatient.
Regards
Matrix.Max
(Formally know as Dvyanc)
Sr. Member of Bitcoin Community.
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Agree with this. Also in 2017 tether was running its own printing machine and there may have been a bit of foul play involved on their part. A lot of that narrative died down since then though. I think they were able to prove they had the funds. Also just like the DeFi craze now, we had the ICO craze back then. Although I wont rule out a massive price surge towards the end of this year of early next year. All signs seem to be pointing towards it. So maybe you dont even have to ge *that* patient