The question is whether any of those other sites could maintain quality while also being Google , that is, while being target #1 for every SEO bad actor, spammer, and anti-trust regulator on the planet. The people at W3schools are a combination of all of the above: filthy SEO spammers who would readily make an antitrust stink if Google started just ripping off their content, but who in all likelihood don't care if Ne…
They could even take the blacklists from all people with a high reputation and use that as a signal when they are building search results for others.