Bitcoin, and all blockchains employing Nakamoto consensus, are encumbered by the need (and cost) of continued block production, even as subsidies reduce and eventually goto zero. Even if there are no new transactions, participants of transactions in recent blocks are incentivized to ensure block production continues in order to avoid double spends via chain rewrites.
Discussion
I’m more concerned with the outside perceived value of Bitcoin, how is that affected by a bunch of miners bailing? I guess we can’t truly know until it happens