Browser users are not (by default) Atlassian ICPs so IMO there's zero lock-in. I am going to most likely change my browser very shortly because I don't see Atlassian building out Arc. TBC raised $50M, they and their investors got a good return in a short amount of time. This chapter is now closed.

are they locked-in tho? People loved Arc, but they killed it. Doesn't seem the reviews of Dia are all that great.

I love Arc. I tried Dia. I wanted to like it but don't see how it's going to be valuable for me.

The browser features are _much_ worse than Arc (no sidebar, bookmarks are a dropdown, ...) and most of the time the AI can't even "see" or "read" what's on the page I'm viewing, so it's just worse than using Claude/ChatGPT/Gemini.

I'm still using Arc and will probably continue until there's another browser that copies its UI/UX improvements.

I haven't kept track for a while, but whoever I knew that used arc, they found it hard to go back to standard browsers after getting used to its various UI affordances. Even when they pulled the "you need an account" thing most people I knew just sucked it up and created an account. I am assuming a good portion of them will submit to whatever atlassian demands.

why not Zen https://zen-browser.app/ ?

I've found it just as good AND it's open source https://github.com/zen-browser/desktop

Because for better and for worse - it is Firefox.