There are at least a few important differences that the author ignored: * Not many "trends" have had 500 million followers. * The other companies mentioned ac

There are at least a few important differences that the author ignored: * Not many "trends" have had 500 million followers. * The other companies mentioned actually ceded control in some fashion; Facebook is simply taking investment dollars. * The other companies mentioned didn't have Mark Zuckerberg at the helm. Only a crank wouldn't acknowledge that Zuckerberg's leadership has been masterful.