In their current state, I personally don't find PWAs + local databases ergonomic enough. So actually what I'm hoping to get out of the platform I'm building is - somewhat egotistically - an alternative that works for me personally and possibly for a few others like-minded individuals, not a browser replacement to take over the world.
I would love to see another way to deploy local software, aside from building dedicated Windows and MacOS apps. There are efforts in the Docker container world to provide smaller deployment frameworks. There are efforts in the WASM world to replace containers with WASM deployment (which works well in browser, BTW).
Is it still?
From what I saw personally, Azure is eating through this market. They give enough of the right guarantees that mutlinational corporations are fine with processing all their (and their customers') data in it, and from some quick research I've been involved in, it's the one (and AFAIK the only one) big cloud provider you can use in EU with sensitive data in a compliant way, up to and including medical data.
Beyond that, what's really left that most business users wouldn't just prefer to stuff into Azure and stop worrying about handling it?
I agree as well here, and from that complement I hope to be able to draw a small community around my product. Still, I pessimistically feel that it's too small a share of users to make browser vendors take notice and build features for them. But of course I'd love if they'd prove me wrong. :)