Nope. It really isn't. The hardest thing by far is to get lots of usage. Once you have lots of usage, it's really easy to make money whether it's advertising, fees or whatever.
Can you name 2 or 3 "idiots" that have done what you suggest?
Can you name 2 or 3 "idiots" that have done what you suggest?
Pinterest. Groupon. Reddit. Snapchat. Instagram. Youtube (for many years). Twitter took a long time to make money. Most news sites have a hard time, which is why WSJ is paywalled (as mentioned in the article). On the "smaller valuation side", we could say FriendFeed, Zite, Hot Potato, Beluga, GroupMe, TweetDeck, Dodgeball.
It's much harder to than you may realize to monetize.