I don't know, but I've asked myself that very question years ago about Apple and Google, but I never bought their stock. In both cases they always found ways to keep growing. Honestly, this kind of stuff is really over my head and outside of my realm of understanding. And anytime I try to make my own decisions in the world of investments, I always lose money. So about a year ago I found a knowledgeable group that seems to be a lot better at this than I am and it's been working out.