Microsoft has the potential to make Windows 11 UX great. They made it worse than 10 by removing functionality that's existed for years.
Will Microsoft do it just because the potential exists? No.
Mozilla CEO takes a $3m salary and their biggest earner by many magnitudes is a search partnership with Google. Nothing is going to change with how they treat Firefox at a consumer-level until they need to man the battle stations with a rugpull on losing that partnership.
"Why would they lose it?"
AI happened and the current economic climate means Google is reducing spending by killing things that don't bring tangible value.