Does it really matter? I would think that over time different companies would have the top spot.

A better measure is which company will be the most relevant in 10, 20, or 30 years. When I worked as a contractor at Google, I was very impressed by the company but wondered privately what would happen if their ad revenue was seriously disrupted.

Same with Apple. They make great gear but they might be disrupted by incredible cheap gear in the future from China and South Korea.