$2,000,000 at .08 market rate for a very generous 60 years (assuming the average coli poster is 20, and somehow they all will make it to 80, which is very unlikely) leads to a $202 million dollar future value.
That's a straight meaningless calculation. It rests 100% on the assumption that they never touch any of the money, that they get a great interest rate with no risk that they lose the money, that none of it is taxed, that there's no financial collapse, and they give a shyt how much money they have when they 80 years old.
People like try to toss out literally everything we know about human behavior and real-world uncertainty and pretend everything some sort of board game. Truth is, the vast majority of the time money that comes in easy also goes out easy. There's a reason why lotto winners, athletes, and media stars always going broke. Not to mention that the vast majority of new businesses fail. Not to mention that we're sitting on multiple bubbles right now with a great deal of uncertainty regarding how the current system will maintain going forward, with everything from climate change to trade-busting nationalism in the air. No doubt at all that you've never moved $2 million in your life, otherwise you wouldn't be shyt-posting here on the Coli anyway.