Okay, I'll bite ... if you have watched the forums over time, as I have, you will see that the bulk of the questions have to do with problems with customizations/contribs, requests for networking help, newbie questions on how to do simple Linux tasks, and hardware issues. (I'm not even mentioning "will SME run on hardware X" and "when will version Y be released".) But what you will *not* see are posts complaining that something in the stock install isn't working properly, because that really just doesn't happen. Dud or unsupported hardware, sure, problems galore reported. Complaints that SME doesn't do what they want, absolutely.
(Personally, I won't be *happy* until SME balances my checkbook, does my grocery shopping, washes my dogs and takes out the trash, but as I recall the roadmap that's not until version 12.0 or thereabouts.)
But I don't see any significant numbers of people saying "I understand how it's supposed to work, my hardware is supported, I didn't mess around with it, and it STILL doesn't work."
And if people don't want to wade through the forums or can't be arsed to search ... into which latter category a lot of folks belong, clearly ... then paid support is the answer for them. I'm happy that Ruffdogs is stepping up to provide that service, and hope that they make a few bucks doing so.