On L1, you have a network-wide game theory implementation where with each confirmation, new transactions are economically important to not get reorg'ed away, and every txo in a block helps every other historical txo to stay confirmed. There's network incentive.

On LN, ignoring flaws, all game theory is afaict between 2 parties, and heads-up changes things, because there is no longer the safety of the group. How is there any network incentive on LN grounded in game theory like on L1? Asking because you know better than I.