Peter Andreas Thiel (born 11 October 1967) is a German-American billionaire entrepreneur, hedge fund manager, venture capitalist, philanthropist, political activist, and author. A co-founder of PayPal, Palantir Technologies, and Founders Fund, he was the first outside investor in Facebook.
Any big market is a bad choice, and a big market already served by competing companies is even worse. This is why it’s always a red flag when entrepreneurs talk about getting 1% of a $100 billion market.