Money pays devs, not market share. It's obvious in a small market with few competitors (my company pays 10k € /yr for a simulation software seldomly used), but it's still true imo in a large market with many. Competitors that uses tracking and have more users, will often have more money for dev and advertisement, and there is the risk that webdevs won't care for the browser (already happening), but it still can work. But it needs to be noticabely better or pertains to uses cases not coverred for it works.