What does that tell you about the value of that content that people are not even willing to be exposed to an ad in order to consume it? This is the proper application of "the customer is always right". When the customer doesn't want what you're selling, it's not the customer's fault. It's the vendor's fault for failing to meet the market demands in a suitable way.
> Yes, because the quality of content supported by ads and the quality of content done by some ad-free blog in someone's free time is always equal.
No, it's not. Sometimes the unbiased opinion of someone who doesn't have to please advertisers results in a much higher quality product.
> You mean like instructional YouTube videos, free web-based resources for learning new things (programming, languages, etc). Oh wait, all of that is ad-supported.
Do most FOSS doc pages have ads on them? Not that I've seen. O'Reilly and other publishers have no trouble charging money for well-written technical documentation. People are clearly willing to pay for that. Rosetta Stone charges quite a bit for language instruction.