Isn't that basically the same premise as Chrome, which already dominates the market? Google even made something called ChromeOS. Arc wasn't really more than a distracting skin on Chromium with a few innovative bits of UI...

Exactly, they basically have better designer. For the real tech feature, I really don't think they ever brings any new invention to the product. Data sync, AI, etc. All other competitors have these features. They even need to count on chromium update.

Did they drop data sync? Could have sworn all of my spaces, tabs, folders, favorites and etc synced anytime I logged back in on my other machine (with access to spaces on iOS well)

It’s been a while since I used it regularly though.