How did they come up with the 50 billion evaluation?
Ford is worth 45 billion...
Uber's software is worth something, but significant parts are stolen. The number of drivers are worth something, but they'd need to be re-vetted if there was a buyout of Uber (to avoid huge liability).
Uber has been involved in a lot of nasty things, it's hard to imagine them worth more than 5 billion.
What are the barriers of entry for someone like Ford to enter the business? Until self driving cars are a reality, it's probably not worth the liability (of buying Uber) at any price.