Turned down a job at a startup that later sold for $2 billion

In 2019 I had two offers. One from a startup nobody heard of, paying $110K with equity. One from a big bank paying $145K. I took the bank job because "stability." The startup was acquired 3 years later for $2.1 billion. My equity package would have been worth roughly $1.2 million. I still work at the bank. I got a 3% raise last year.