If people created 'other chains' (they have) they wouldn't be Bitcoin. Bitcoin is what people want.

Something like liquid might be useful for scaling and liquidity management (I think it is honestly) but try mentioning that around here.

The uncomfortable truth is that if we had sustained 'high fees' for monetary/capital purposes... people would pay them.

The world's businesses and institutions plus upper-income people in 'developed' countries will pay the fees as necessary (just like they pay for things today).