Bitcoin showed up on my radar when they were worth pennies, but I was young and had no way to buy them and didn’t have a computer that could really mine them. Once I had the means to buy, I had no money. By the time I had a little extra money, they were already in the thousands.
Same story with Tesla. They weren’t public when they popped up on my radar, and when they made their IPO I had no money to invest.