I wouldn't say he's selling out, though. If he scabbed during the screen writer strike, then yes, he'd be a scab, but as it is, he's selling something a lot of people in a different industry think is sub-optimal. It'd be like having ads on your startup endorsing American cars or German wine.
Plus, the Mac ads are so self-satisfied and sleazy. Fight fire with fire.
I respect what you are saying here, and I like to think that when confronted with a 33 ft (10 meter) high stack of 100 dollar bills I would react as you suggest. However, I suspect, looking at said stack, I would probably be seriously tempted.