mcc on Nostr: "Miners will subsist solely off those transaction-based rewards"— well, wait. I ...

"Miners will subsist solely off those transaction-based rewards"— well, wait. I question "will". That's what I'm trying to figure out. Does the protocol have a means in place to *guarantee* that if the amount people are willing to pay for transaction rewards goes down far enough, some kind of balancing mechanism ensures the next block eventually gets mined anyway.