I'd agree with this, but I don't think Banksy can sell out. He/she/them, I believe, have been out to "make it" since he/she/them came on the scene.
bullshit.
people simply reacted to his artwork because it was seriously that dope.
do you know how many thousands of people were doing stencils when he blew up? thats the easiest shit in street art. you find an image, print it out, cut it out and go spray shit.
theres no way he knew people would actually deconstruct buildings just to get a piece of his art. brangelina paying $600,000 for his paintings..
ive seen dude turn down ridiculous amounts of money before he reached "sell out" mode as you put it
banksy set himself apart. and that was just on the graf tip.
excluding his other exploits (hanging his own art in famous museums, etc)