“A large chunk of the art world seems to have drunk the Kool-Aid, too. Megacollectors suppose they can enter art history by spending astronomical amounts. They’re P.T. Barnums, showmen and -women who have become part of the show. Art magazines, once left on coffee tables, are fat enough to be coffee tables. Ten years ago this month, Artforum had 124 pages. This month, it has more than that many pages of ads, and 412 pages overall.”