This is the kind of falacious argument that makes me absolutely insane. Bob is saying here that we as a movie going public should go out and see "risky" and "high road" movies in order to facillitate better movies in the future.
The problem then is that Scott Pilgrim was, simply put, not a good movie. It had ever reason to succeed, and it failed because it deserved to do so. It had big name stars, a cult director of no small acclaim, massive marketing, and a choice release spot. The only thing that could hold it back was bad word of mouth, which it got in spades because it failed to deliver.
Mountains of Madness, then, was killed because of Universal's poor business choices. It lost money on movies it shouldn't have made for so much money, and it suffered for it. If it had been serious about Moutains of Madness, it would have made other guaranteed money makers in order to support it. Warner Brothers is a pretty good show at this: they make big money schlock but can then prop up Inception. And because Inception was good, it made money.
Saying that Scott Pilgrim succeeding would have enabled Mountains of Madness is ridiculous for another reason: one is a PG-13 love film to indie kids, and the other is an R-rated cerebral horror film. There is no pressumed crossover in audience appeal here. Scott Pilgrim only could have served as a money-injection for this film, which was always going to fail.
Universal, if they want to make risky movies, has to strike a balance of sure-fire profitable projects and high brow entertainment. And we have to stop blaming the failure of all good things on Scott Pilgrim.