I wonder why there were so many threads open in these last weeks about that exact topic. It seems even somebody registered an account just for this mission. I think the discussion with most depth is in
this thread, even if the title suggests it's about Ordinals/Runes.
I do not oppose ideas like an infinite tail emission like on XMR or Doge. But the problem is that a hard fork removing halvings e.g. from block 2xxxxxx on would drive away those Bitcoiners who firmly believe that the 21 million limit and the "deflationary nature" is the big USP. I think different, for me it's censorship resistance. But the "21 million guys" exodus would probably lead to a crash of epic dimensions, and probably also lead into another BCH-like fork, a "Bitcoin Classic" like ETC with the 21 million limit intact.
Let's see some of the options:
1) Big blocks without a tail emission would not solve the problem at all, because the miner income would actually fall, due to the less competitive fee market.
2) Big blocks with tail emission could work, but it has the problem I just wrote about - the abandoning of 21 million limit would lead to big turbulences. And there is the centralization problem if the block size limit is rised too much.
3) Tail emission without big blocks would retain decentralization, but obviously the "21 million guys exodus" danger is still there.
4) "Doing nothing" would probably gradually decrease the attack cost. There the X guy is correct. But the impact of halvings on miner income would be lower on each halving, even if the fee level stays constant at 5-20 sat/vByte.
5) Depending on higher prices like @pooya87 writes is imo not a sustainable strategy. Bitcoin should also work if it's priced lower than now.
6) There's also the hilarious idea to make Bitcoin blocks smaller to boost transaction fees. Apart from the hard-fork problem, this however would also make Lightning onboarding more expensive.
7) (this is my favourite strategy, as I wrote about in the other thread): explore merge-mined sidechains and rollups. Each sidechain can have an utility token which would be merge-mined with Bitcoin. Basically, this would be a kind of "off chain tail emission".
Another idea I wrote about (some years ago) that there could be synergies if miners work also as Lightning hubs and collect fees there too. This would of course make it necessary that Lightning is used a lot more than now, in the current state I believe no miner has really incentives to enter the LN fee market.