It's like asking "why are all these blank sheets of paper so similar?" Browsers are getting more minimal because browser chrome just gets in the way of the content.
Anyway they're not that similar. Firefox has a search bar, refresh button on the right, and no greyed-out "forward" button. Opera has the speed dial buttons. And Chrome would be the most "minimal" if it weren't for the extension icons over on the right.
Anyway they're not that similar. Firefox has a search bar, refresh button on the right, and no greyed-out "forward" button. Opera has the speed dial buttons. And Chrome would be the most "minimal" if it weren't for the extension icons over on the right.