As for the case of bitcoin, I might say that the supply isn't really dictating the price nowadays but the demand from people all over the world. The supply is ever increasing every time a block is found, but the demand on the other hand is pretty hard on the buying side, causing some kind of price bumps. There are only 21 million bitcoins to be mined until 2140, 16.9 million are currently in circulation, 1 million of those are possibly lost in the void, and less than 10 million are in circulation. It's been like this for over 3 years now, but looking back, the price is not that extravagant compared to what it is today simply because demand is simply not there.
So there will be more of a demand for Bitcoin since it's limited as for how many will be around until 2140. We won't be around till then, that's for sure. Who knows what might come out or what new trend might be out there when it does come out. Things changed very quickly in the last 20 years. So for another 122 years it will be changed a lot for sure. There will for sure be a demand for it now even more for those who know about the informatoin as you do there dothebeats.
If everyone knew about the 2140 and so on, there would be a larger demand on it I believe. Not everyone looks at the charts for how many coins there are they just look at the price charts. See someone who lives and breathes it for the last 3 years is just what I needed.