Since the total number of bitcoin is fixed, so the value of bitcoin will keep grow, and it's price will keep grow also. So will there a price cap for bitcoin?
No its not. The price of bitcoin will not continuously increase forever. Bitcoin's price may experience crash that will lower its value. Not all the time, bitcoin' price is going up. Sometimes it will go down and can make bitcon's price very low. When this thing happens in bitcoin, some people panic about their bitcoin. Some people sell all of their bitcoin and accept the fact that they have lost so much money which is a wrong idea. If bitcoin experience crash, we should only hold and keep our bitcoin because there will come a time that bitcoin's price wil get back on track or maybe have a massive increase.
I agree that there's an end for this drastic increase of the price, because by the moment bitcoin price will stabilized at $19-20k the buy and sell also be like a ping pong ball. The situations might be break even and if many will buy then its in equality of the profitable price. Maybe we can experience short spikes but rather it will drop immediately at a certaim level of price value.