Flutter looks promising for solving a lot of the platform conflict problems.
Still room for improvement but it's not so restrictive about the common denominator.
Please note I didn't mentioned anything technical, it's pure product management and strategy and that's one of the reasons I'm optimistic about Flutter's future.
Honestly I seriously doubt Flutter will ever be popular for web. It recreates everything already included in browsers like DOM, CSS, text editing, etc. There is already too much bloat with modern JS apps.