Microsoft is a software juggernaut. They can throw as many developers at a problem as it takes, and backwards compatibility is one of those problems they've cho

Microsoft is a software juggernaut. They can throw as many developers at a problem as it takes, and backwards compatibility is one of those problems they've chosen to focus on since they're used so much in business. Apple can't do that, and it pays a lot less for them. Mac apps tend to be more consumer based, which means backwards compatibility isn't nearly as important.