Many people are scared that the price of bitcoin can never rise above 15k again but i disagree with this. The total number of bitcoin is 21M and currently about 16.9M has been mined already. Don't forget that, currently some online marketing platforms (Amazon & Ebay), institutions (UNICEF) now accept bitcoin as another mode of payment aside Electronic payment and fiat currency. The demand of bitcoin will increase with time as more institutions decide to embrace cryptocurrencies(bitcoin) as a payment method. As the demand starts to increase then you can be rest assured that the value of bitcoin will also increase. This is the future folks, don't be scared by the trend of the market and sell cheap because Green days are coming!
Okay, let say, cryptomarket also has this supply-and-demand-economical season. In that season, by the time that the total supply has been mined then Bitcoin will become a rare thing, and it might help the monetary value to go up.
But I think, not just this supply-and-demand rule matters, what matters the most here is the mass adoption. Just like what you have said, some famous platforms and even institutions are now accepting Bitcoin. After being accepted by those big entities and more soon, then surely, the price will rise.