I don’t have any good examples that I know of, but I am very curious. To me though, a rivalry is a rivalry when two or more of people are closely competitive. But is it really a rivalry anymore when someone has more victories over the other? I don’t think so.
We figured out all along that Firefox just wants to be like Chrome and Edge in it’s own way.
But as for marketshare, Firefox barely even got a sniff, if we’re all honest.