You’d need to invest 1mil in a 3000% return stock in order to make 30 mil like the gold option. If you bought fb when it was lowest and sold when it was highest, you’d get 2158% return. There’s stuff like Amazon, coca cola, etc. That had much higher % gain but you’ll need for that company to exist and then wait for it to explode.
If you already have a lot of money to invest, sure, your strategy might be worth. Otherwise, double gold sounds better.