I find "we didn't, therefore we can't" a kind of defeatist and unrealistic reaction. The internet has been shaped and reshaped a few times, in a lot of ways for the better, I don't see why it couldn't continue to be refined.
I'm not taking that position, quite. But I'm not seeing much contrition for it being that way the first time around, or sophisticated evaluation of why it was, or a plan for how to improve it in the future. Without those I think the hope that it'll improve in these ways is simply naive.
What I'm arguing is that we're taking 2 steps forward and 1 step back rather than a linear path of improvement. In this case one of the steps backward being the walled gardens, steps forward including the democratization of the internet as a whole.