I think the scarcity of bitcoin is what causes the increase in bitcoin price therein and making it have a value. So the value of bitcoin is equated in price.
Scarcity means that the assets has a very limited quantity for consumption but in Bitcoin other things are the reason why it keeps growing because if it was scars a lot of exchanges would have stop having Bitcoin pairs but on the contrary all the exchanges has a 24 hours steady market for Bitcoin, so actually is only when you have tried to visit the market to buy Bitcoin but could not that's when you would say is scars, so since you can buy at any time of the day it remain available, however from now till many years to come so long as Bitcoin is working it will never be scars for anybody, meanwhile if it was the scarcity that give the growth what happened few days ago when it falls to $90k? Does it mean that it was no longer scars for people?, because if it was scars those billionaires would have empty what is remain of the market and all us buying slowly would have left with no Bitcoin to buy, so actually the total quality of Bitcoin is capable of accommodating everybody in the world.
I disagree with you because bitcoin being listed on different centralized exchanges or decentralized exchanges doesn't change the fact that bitcoin is not limited in supply or scarce. Since bitcoin is a digital asset, it is when bitcoin is listed on centralized exchanges or decentralized exchanges that you can easily accumulate it and hold it for a long time. Even though bitcoin's total supply is 1,000,000, it will still be listed on different centralized exchanges, and there will still be people who will sell their bitcoin for short-term profit when they know too well that bitcoin supply is small and they might not buy back the quantity of bitcoin they sold. Scarcity is one of the reasons why bitcoin keeps increasing because there are so many investors who are willing to buy bitcoin at any given price because of its scarcity, which triggers the price to increase.