Worth calculating the affect of these different rates...

Worth calculating the affect of these different rates compounding over a medium term time frame, makes it pretty clear why we can't expect such high growth forever. Our brains aren't really wired to be able to comprehend the power of compounding, we naturally look at these rates in a much more linear way. The actual dollar increase in revenue will likely continue to accelerate, but at a higher base it's only natural that the percentage increase will fall.

Nonetheless, as I said yesterday, even 20% compounding for a decent time frame would be excellent and deliver spectacular returns for investors.