In B2B one B has to have an actual source of revenue to justify paying the other B. What is that source of revenue? Hoping someone else will figure out a reason to use it isn't a business model.
Sure. The stuff Microsoft is doing in the Edge sidebar (generating text for emails/LinkedIn posts/etc) could easily be a Grammarly-sized company for other browsers. Copilot earns revenue for GitHub. First line chat support. Internal wiki ”Clippy”. There’s a million use cases.