I think the value of an item will not change especially what is discussed in this topic is bitcoin. according to my knowledge the value of Bitcoin will not change at any time, what will change is the price may go up or down depending on the future of Bitcoin.
I think that as long as there are many fans, what is feared will not be possible and it will be difficult to prove, because the law of economics is that if there are still many devotees, it will continue.
You are right that the price that will make something change will depend on the demand and will not always stay the same. every time the final price depends on the market going on how the demand from the market and its availability.