And, yes I agree, it would make the internet great again.
I wish it was popular instead of random set of forums, mailing lists and reddits.
Another way might be something similar to ad-blockers for web browsers.
The walled gardens exist because the open Internet kind of sucks, really.
Was it that, or was it that the open internet was proving more difficult to monetize? Knock on effects on resources thrown at UX may be relevant.In my book, they're moderately worse. I entered the internet around the time of free web forums, where anyone could run one for any reason. I moderated a couple moderately sized ones, mostly oriented around computer games. Overall it wasn't too bad. Certainly nothing compared to what I've seen in larger communities. I suspect the larger the community, the worse the garbage.
But the main reason I say commercial players have made it worse is that they've also commercialized content moderation. Which is to say, they employ people to sit at a desk looking at the absolute worst humanity has to offer for 8 straight hours a day for barely better than minimum wage. That's like a job straight out of Black Mirror.
Forum moderation, by contrast, was/is a volunteer position. You were only in it for as long as you chose to be, and you could leave at any time without any effect on your livelihood.
So I'd argue the "community watch" model of amateur forum moderators was closer to the greater good than the commercial walled gardens.
E-mail is pretty much the last bastion of the old open Internet, and the amount of resources needed to just deal with malicious e-mails is huge. Mindbogglingly huge. And those costs cut out a lot of organizations from being able to operate their own e-mail servers (either the costs of doing it or the costs of verifying to the big players that the e-mail you're sending isn't garbage).
And that's pretty much the story across the board. The old Internet was overwhelmed by bad actors who would ruin everything. Facebook and Twitter house a lot of awful stuff. But can you imagine how bad it would be if we were all still using USENET and IRC?