However, I will say that the latter part of your post is the kind of comment that I was expecting, for better or worse.
For example, I'm willing to engage in dialectics about the advantages and disadvantages of a capitalist system (for example, see my other comment about this article), but you didn't really say anything other than "you make some good points, but this is what I expected."
Take a position. You don't diminish an echo chamber just by observing that it exists, you have to engage with it and attempt to improve the discussion. I called out my potential bias and took a stance. You've not really done either here, which ultimately diminishes the impact of calling out the difficulty in the first place. What was the point?
There's a great saying actually that's relevant, but for the life of me I can't remember.
I think you do raise a legitimate point about echo chambers, but how does that observation on its own help us? It's pessimistic. In my opinion, you've not really contributed to a resolution here except to be cynical.
I support capitalism, and I admit it has done very well by me. I don't come from a privileged upbringing whatsoever, but it's now likely my children will. But your binary characterization of the inevitable functions as sort of a self-fulfilling prophecy here - will my opinions on capitalism be viewed as coming from someone who benefits from it because that's the way you framed it? By starting the conversation off in the way you did, I believe your framing antagonizes it prematurely. Why not decry an echo chamber when it actually emerges?