I know it sounds a little ridiculous, but I think Google still has a long way to grow. I can easily see them as the first trillion dollar company and well beyond that. I think they understand the process of re-inventing themselves better than any other tech company. They acquire a lot of companies, some of which continue to grow and change the very nature of Google itself (example Android). They also understand Black…
Google has never successfully reinvented themselves. They were founded as a search engine, and that's still what most people associate them with.
I would give the crown to Apple. Since Google was founded, Apple has been best known for the Mac, iPod, and iPhone at varying points, each product eclipsing the prior one in popularity, mindshare, and profit.