I cannot understand such relationships, but suppose that the amount of 0.06624605 BTC is enough to guarantee a fortune worth a million dollars, then a million dollars is an amount that does not equal the value of a million dollars today. In the past, it was impossible for an individual to reach a billion dollars, and now we are starting to hear people with wealth more than Trillion dollars.

when the value of 0.06624605 BTC is equal to one million dollars, this means that the individual can generate that amount as income in less than a year.

Summary of what I am trying to say, there is no specific limit for Bitcoin to be rich, just work hard and collect more, reduce your expenses, and you will enjoy a safe life.