Whenever you see someone who you believe to be an idiot succeeding, it usually means they're really good at the game and you don't even understand what the game is .
Or their family donated enough money to an Ivy to have a building named after them.
One thing to keep in mind is that the majority of businesses and products fail. Remember survivorship bias. For every successful Netflix there are a dozen failed movie streaming services. Anyone who has had a few weeks worth of software engineering can produce a Twitter clone, but none have been successful.