Never say never.

But an increase does not align with the interests of the "economic nodes" today, so I can't see such a push for an increase until bitcoin has gained traction at a level vastly further than it has today.

There could be second layers being sufficient which result in on-chain bitcoin being used only for channel open/close and settlement transactions (which might be the case if fees per trx end up in the $50+ range). Currently, $50/trx produces even more revenue to the miners than does the 6.25 BTC per block award subsidy.