I already see discussion on the bitcoin dev mailing list about how to deal "with block rewards being too low to maintain acceptable security" in the distant future [1]. We can expect more of such discussion as the block subsidy keeps halving while still dominating the tx fees [1].

An emission like 1 per second forever is much more immutable due to guaranteed miner incentives and lack of arbitrariness. And thus a better basis for hard money [2].

[1] https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022...

[2] https://john-tromp.medium.com/a-case-for-using-soft-total-su...