A browser? They're overextending themselves. Rather than fix all the bugs in their chat interface, or finding ways to make the model suck less, they're throwing every random project at the wall, hoping to justify their insane spend.
Every day I use an AI company's chat interface. Every day I report bugs that go into oblivion. Every day I wonder why the interface has no useful features to manage my data, and the ever-increasing collection of giant chat windows I'm never going to manually search through. I wonder why all the connectors are proprietary, and there isn't one just called "IMAPv4", "CalDAV", "S3", "SFTP".
I don't think these companies are after a user. I think they're after "the big money" - advertisements, contracts. No need to make it user-friendly if the enterprise sales team is kicking ass. The product is the shiny box you sell to executives, and inside is "total number of new eyeballs", "engagement trends". Everything new is old again.