Right. That must be why Google, Craigslist, and MySpace are such monumental failures.
Notice I said that pretty is good, but not the only good.
Myspace and Craigslist 'can't' make beautiful products, Myspace because that would detract from user personalization, and Craigslist because they never hired the design muscle because it works well enough.
MySpace is popular with the same personalizing crowd that would put stickers on their MacBooks.