Personally, I see Revolt as more likely to win out if/when Discord collapses than Matrix. I've only heard Matrix discussed on platforms within the fediverse, whereas Revolt I've heard some rumblings about by others who haven't touched anything like Mastodon or Lemmy/Kbin in their lives.
Either way, I'd be glad to see more FOSS win out over yet capital controlled social media.
Right now moderator, subscriber, etc. data for stuff from different platforms and instances is broken on kbin, usually just displaying ernest as the owner of anything from a different instance.
Discord is opening the monetization floodgates: get ready for microtransaction stores and paid 'exclusive memes' (www.pcgamer.com)
Remember that the button at the top of the sidebar expands the options to disable federation. (media.kbin.social)