Uhhhhh no.bitcoin having a fixed supply doesn't means it will continue to go up forever, all stocks also have a limited supply of outstanding shares and stocks don't go up forever.
All stocks do not have a limited supply of shares (outstanding or otherwise) and theoretically stocks can go up forever. Or at least up till the "ink" runs out on the real phony currencies of the FED/ECB/BOE/BOJ/BOC.