quiet-loner wrote:The rule is; if you do an advert you are no longer an artist, you are just another corporate whore.

That's real narrow way to look at it. How about this, your "art" becomes your job. You know think about it, how well do you think motorhead albums still sell?
Think of it like this: Most people who are big name musicians sell out long before they start pushing fritos. Would you classify signing to a major label being a "corporate whore"? Being on Mtv or national radio syndicate is being a "corporate whore."
AND, most of these people start trying to or actually suceeding , breaking into this industry at a very young age, without a fall back career. So let's look at Lemmy, when I see a guy like him doing it I think, "hmmm, he must need the money"
There comes a point where your records aren't selling anymore, and you have no viable source of income. Soemthing tells me Lemmy doesn't hold some associates degree in insurance billing and coding or something. And it's not like he can get a job waiting tables. Point is, the guy's gotta pay bills.
What is that you do for a living? I'm a barista and I work at a UPS Store. I used to do independant graphic design, but now I do it out of the UPS Store. I think design would count as "art" and since now UPS takes a cut, that would make me a corporate whore. Well, I'm a corporate whore.