I don't think people appreciate the role that #OperaSoftware played in fostering the #OpenWeb and #IndieWeb during the first #browserWar (when the #OperaBrowser was still built on their proprietary #Presto engine), and a fortiori the role it had in their demise (when they switched to being “just another #WebKit/#Blink skin”), despite their browser never even reaching a 3% market share.
Microsoft had reasons for this: at first it was because they didn't “get” the Internet, later on it was because it's the only way they had to (attempt to) control it. They did all they could to cripple it: remember when #OperaSoftware released a “Bork” edition of their of the #OperaBrowser in response to #Microsoft serving them intentionally broken CSS? https://press.opera.com/2003/02/14/opera-releases-bork-edition/
Now imagine what the Internet would have been like if Opera, @mozilla and few others hadn't held their ground.