More fundamentally, Facebook has a serious issue here they think they can just handwave away. It‘s similar to Google’s largest issue. Google and Facebook both earned a reputation as firms that give things away for free. The problem with that is that if you get known for giving goods/services away for free or low price, it’s so much harder to move up-market. It’s like saying “well, why would I pay $40 for a premium meal from McDonald’s or $10,000 for a Dell computer or something-something premium something-something WalMart?” Neither firm has a reputation that allows it to sell things at a premium price point. Facebook and Google give away so much (in exchange for data) that paying money for Facebook or Google goods and services just wouldn’t occur to most people. In fact, both of their major “successes” with getting people to pay money for products are with other brands that they have acquired (Oculus and Android). What brand would Facebook sell this watch under? The Facebook brand? If so, it’ll be a tough sell getting people to pay $150-$400 for Facebook, it’s the same reason the Snapchat glasses failed.