L2s that starve miners of fee revenue are completely unsustainable long term.
"upgrades" are L1 consensus changes needed for creating different L2s, that cause miners to receive more fee revenue, or features like CTV that make L1 transactions more useful so more people will do them.
miners will need to rely increasingly more on fee revenue and less on block rewards. the status quo of lightning, liquid, cashu, and arkade is not going to make that happen. they earn next to nothing from these. it's unsustainable.
the scenario where extremely expensive lightning channel maintenance transactions are funding most of the hashrate is extremely bad for permissionlessness and freedom. it's bad for the user. so we need something different.