Facebook has a pretty bad habit of canning their internal projects. There's so many products that were close to making it out but were trashed. I used to think

Facebook has a pretty bad habit of canning their internal projects. There's so many products that were close to making it out but were trashed. I used to think Microsoft was bad w/ having 3 different teams competing over the same projects, but at least a product would come out. Facebook teams fight with themselves and have their projects sacrificed like clockwork. Things are probably worst now considering the tech required has a much longer runway (3-5+ years before releasing). They should've just worked on a car. But yea to answer your question, they invent a lot of stuff that never makes it to the public's eyes. They have whole series of consumer hardware with different levels of innovation they've finished but nobody outside of facebook will ever see it.