Although Apple was not as successful as Microsoft in marketing its MAC PC's but it is well known to be a very innovative company. It created blockbuster product called I-Pod which created ripples in the IT market. Apple also recently unveiled Safari browser which despite its bugs is the fastest browser in the market, twice faster than IE and 1.6 times faster than Firefox. It proves how the best product in the market is beatable by the right competitor and right R&D in place.
Microsoft has also recently been nimble in marketing through innovation, its XBOX 360 was a very successful product.