They got 1 billion not for solving the right problem or for solving a hard problem, they just sold it at the right time to the right customer in the biggest dot com bubble since 2000 and I don't think this requires too much talent, only lots of good luck.
There is too much focus on building some hype and find a good exit fast, this is bad, we need startups that solve problems, adds value to society, we need to get rid of the financial speculation and the bubble.