If there is some productive person producing corn, and he demands payment in tail emission Bitcoin, I can exchange hard cap Bitcoin for the other and buy the corn. He has no influence on the hard cap.
Whoever produces what you want decides how you pay for it. I've covered how that applies to bitcoin in this video and I go deeper into it in my presentation at nostriga if you want more https://youtu.be/X_xgmVLyB94
If there is some productive person producing corn, and he demands payment in tail emission Bitcoin, I can exchange hard cap Bitcoin for the other and buy the corn. He has no influence on the hard cap.