Their fall will be faster than their rise. People already hate facebook. But they're hooked in. Once a better option comes along they will start using that and at some point there'll be a tipping point and then facebook will go the way of myspace. They just won't be able to compete with a steemit-style economy. It's interesting. People have always thought advertising is the way to make money online. All of these massive companies still losing money like twitter in the hope that one day they'll work out how to monetize themselves. Has Steemit worked it out? It'd be interesting if there was an option on Steemit to sell the data you create.