Ann: Altium Technology & Business Strategy Presentation, page-101

And using that logic in about 50 years would earning more than all other companies in the world put together.

Actually I think three years is about the limit of reasonably reliable earnings forecasts.

I still say that a current PE of 50 is high in relation to 20% earnings growth over the next three years. I believe the rule of thumb is that if PE ratio divided by forecast % growth rate is greater than 2, then it is expensive.