The price of bitcoins is expected to adjust inorder to keep mining profitable, whether they're are getting 50BTC per block or 6.25BTC or none at all, when all bitcoins have been mined.
So essentially what this means is that Bitcoin price will keep on increasing? So that mining can remain profitable? So then what happens in 2140 when no more new Bitcoin is introduced? How can miners mine profitably?
Welcome!
I see you are really new here. There's no such thing as
the bitcoin price will keep rising. You really have to understand its mechanics.
Mining is only a part of the game.
Start here and then you can spend days on the topic. Good luck!
https://hackernoon.com/what-is-bitcoin-part-1-1755b81984e8