Basically, it's ok for him to charge for his right of image, it's ok for the GPL to place limits on IP, but it's not ok for others to charge for other rights like IP or limit the ways their IP can be used
(Right of image is not IP, it's a Personality right, still - and I agree with the GPL)
Nothing. It's a typical ad hominem attack and the parent comment either 1) doesn't understand that this does nothing to invalidate an argument or 2) doesn't care.
Independent bookstores are nice, but they fail to account for the long tail, that's where Amazon shines.
And for the "common books" the big chains do an ok job. E.g. Harry Potter
(Still, physical B&N stores seem to be going away, Borders is history already)