Good question. As Jeff Booth has said, Nostr is built on Bitcoin as a base layer. So if Twitter integrates with Nostr as a client, and assuming they also integrate zaps and Lightning as well, then suddenly millions of users around the world have a much larger network of people to interact with and trade products and services and Bitcoin with. Since Twitter still has brand recognition, suddenly by becoming a Nostr client they are getting in on a protocol layer built on Bitcoin that is decentralized, which will motivate many people to not only stay on Twitter, but to build their platform, sales funnels, and monetization strategy on Nostr+Twitter instead of leaving for Damas, Amethyst, etc. Since Elon Musk builds companies which are intensely innovation focused, they would rapidly innovate Twitter as a Nostr client that could take advantage of their human resources in amazing ways, creating the app X that Elon has discussed, having been inspired by We Chat and such, that is intensely feature rich. In the long run, Twitter could dominate the social media decentralized market, while saving it's users who want to consider migrating to Nostr, but haven't materially made the move, to have their audience and Nostr in one place. It would be amazing. And they already have the engineers to make it happen.