From 2099 till 2140 (when the last satoshis will be mined) there will only be one bitcoin mined. By the end of the century, supply is virtually fixed and limited to the maximum of 21 million. For the following forty years, miners will be mining only one bitcoin...
In the first place, none of us here in cryptocurrency can tell what happen in the future. This probably your opinion, I don't know what is your basis for this matter. But for what matters most to me is that 2099 till 2140 is only your thought were you based it only on your analysis maybe or something. But it doesn't mean that's the exact things that will be going to happen and of course not!