The biggest problem I see with Apple and corporate customers is price. Most corporations simply are not going to shell out for Apple computers for all their drones when they can get a DELL that runs MS Office just fine for 400 bucks. I think Apple will continue to make inroads with companies and/or divisions of companies involved in software development, simply because you can test on all platforms with one Mac. But in mainstream corporate and government sectors (office workers, law firms, accountants, etc) I just don't see the transition happening due to price. That's not to say that some higher ups who want Macs won't get them - but in middle management in below, in most big companies, I think Windows is here to stay for a lonnng time.