Let’s be honest here. If that happens , Chrome wins cause developers interest do not align with consumer interest but money interest. Understand I’m not saying that Developers go for the money, I’m saying the majority of companies that employ developers do and they will target chrome. Firefox by itself is not enough to fend off Chromes “standards” and the only thing ironically stopping Chrome dominance is stagnation not completion.
I am all for browser diversity but if there did end up being only one browser almost everyone used I would prefer it to be Chrome than iOS Safari. Everything from security updates to functionality in numerous areas is inferior with Safari and that hurts users and developers alike.