Did you read my comment?

I'm saying that the Americans want colonoscopies to remain unchallenged because they make money out of it. This has little (or nothing) to do with the cost-benefit trade-off that the article discusses.

I didn't find this (self-evident) idea anywhere in the article.

Isn't asking people if they read the article frowned upon here on HN?

It didn't mention the bias from those that don't want to pay for the procedure which was a little unbalanced, perhaps.