I think some are fine, but if I had to choose one I'd choose open access, so I think it's the more important of the two. And in fact it's because the web is open, "no permission needed" by default that allows elitist groups to exist on the web. So I don't think I see it as a mistake. The alternative would be... You can only create a website if you're invited to the internet by someone who already has access? You have to get approval for your website from some authority before it goes public? Those were all potential futures we imo thankfully and carefully avoided!

This is called the Eternal September problem, after the influx of fresh users to Usenet at the start of every school year, being extended indefinitely as AOL brought new users continually to Usenet.