For 10 billion, they should only be able to get a tiny verticle. Like the watch. But if we're talking MacBook, Ipad,and I-phones, they'll need to pony up a bit more. Remember, there are other device makers, all of whom would love to be the FIRST to have dramatic performance improvements and significantly longer battery life.
Think about what it would mean, if in your market, you are the FIRST to say; "you'll charge your batter once every couple of weeks, and your web content will open/stream instantly."
Being the first is the most imporant. Because if you're not, you're last. Especially when there isn't a complimentary/competitng technology you can run with.