Especially given how the like button wasn't exactly a novel concept, nor something that wouldn't have otherwise come about. These systems existed prior to Faceb

Especially given how the like button wasn't exactly a novel concept, nor something that wouldn't have otherwise come about. These systems existed prior to Facebook and if it hadn't have introduced it, some other service in the same niche would have done exactly this. And Facebook's privacy issues and general sociopathic business attitudes predated all of it.