Gold has been a store of value for millennia. Tulips were a store of value for just over a decade. What makes you so confident Bitcoin is the new gold and not the new tulips?

As long as its price goes up, it will be more and more lucrative to mine (because rewards in Bitcoin terms will be larger).

That's only answering the question of "will it technically implode". It has nothing to do with why you think bitcoin will continue to be a store of value like gold as opposed to suddenly stopping being a store of value like tulips.

It is just about the price of bitcoin. Which is affected by several factors including adoption — as a store of value.