We basically had this with old Firefox, didn't work out. We kinda have and had this with all the small custom browsers, like Qutebrowser or Nyxt here, doesn't work either. Customizability is a liability, it's work. It comes with many problems, responsibility, work for the users, and not many are willing to take this. Chrome, Firefox and the others are more or less the best we can get regarding balancing customizing, stability, security and user-friendliness.

I mean even in Editor/IDE-Space the popular tools are not the ones who give you the most customizability, but those who give you enough customizing, while not bothering you with the rest, and instead focusing on stable powerful features. Maybe if Coding AI becomes stronger, we can reach this utopia of perfect customizability without all the problems.