The windows tilt. The floors are metal and asphalt. Pipes are exposed, as are beams and joists. I never had such a fetish. I was playing with a denial mechanism in the culture.
Rich people hate chain-link and yet they put it around their tennis courts.
Then they don't see it. Psychologically, it's not there for them. On the other hand, Gehry doesn't deny his fondness for plywood, raising it in recent work to the level of marble and mahogany. As Filler observed, Gehry's grand use of cheap materials paralleled artists' use of them, especially Robert Rauschenberg's combine sculptures, Gordon Matta-Clark's industrial cutouts and Carl Andre's minimalist use of humble woods and metals. But what was fine for artists wasn't fine for an architect.