They messed with Dia thing. Arc had a clear value proposition, a better browser for power users. I'd pay for that, mostly because the browser itself, but also because they had pretty straightforward approaches on their communication, how small things work, how bad features should be removed and so on...
I never understood Dia. ofc I downloaded Dia and tried using it a while, but never clicked on the agent bar. They told somewhere sometime that they were seeking a bigger user base. Dia definitely is not that place. A browser powered by AI definitely is nothing something beyond the geek/early adopter crew.
Things become worse when we think about how they handled this whole situation. Sometimes shady, sometimes with a lot of arrogance and always shunning off their loyal users.
We don't have the whole information, of course the team and maybe investors know better in details what happened, but definitely things weren't going well. The recent tweet from the design guy cheering up the side bar is almost a suffocated scream from the team imo.
From the company journey perspective that's a depressing way to have an exit. Wish them the best, but I'm deleting any traces of TBC from my computer.