And I have to say that 1) is incredibly naive. Now some monopolies may be formed by benign or admirable methods as you describe but the issue is what happens once they dominate the market. Prices go up, innovation and product/service quality goes down amongst all manner of undesirable outcomes occur because there is no compe ion. There are centuries of empirical evidence demonstrating this dynamic.
Personally, I am all for a mixed economy where free market is the default. In the case of trusts, markets of scale, societal need, vertical demand markets, and similar phenomenon I support market intervention. I reject economic puritanism either way. For myself, you have hundreds of firms in the market and zero economic basis for intervention when it comes to the NCAA beyond the trust itself. End the collusion and let the market decide as they compete for market share.
I just find it interesting that conservatives who tend towards said puritanism lose their religion when it comes to NCAA athletics.