It is a serious problem for the future of Apple that they have almost completely lost the support of software developers. It used to be that most software developers had MacBook Pros and, the ones that didn't wished they did. Now software developers are generally buying non-Apple machines and running Linux or Windows. In the short term, this is only a tiny market so the loss of sales is irrelevant but, these people are people that other people look to when they are deciding what to buy and, they are people that develop software that other people use. If there is no decent software for Mac OS because none of the developers who would otherwise write it and release it use it anymore, it will make it much harder for other people to use. Both of these are long term effects and, it is too soon to show their effect on sales but, they are important. Since the release of Mac OS X, it has been an attractive platform for developers but, this has completely changed in the last couple of years and, the only reason to use it now is for iOS development IMHO.

Windows has done an awful lot to make itself more attractive to developers recently because they get that it is vital for their future. I hate Windows but, even I have to admit, it has got way way better.

Apple's decision to stop producing things like AirPort Extreme or monitors is a stupid decision in the long run too. Even if these don't make any money on their own, part of what makes Apple an attractive platform to people is that they can buy everything from Apple and it work together so, even if these lose a bit of money, they make sense to do.

There are an awful lot of reasons to not use Mac OS so, it has to get the reasons to use it right and, it is quickly losing them. Fair enough, most of their money comes from selling iPhones but, sales of these will be seriously harmed in the long run if Apple can't sell other systems that integrate well with them. For example, Microsoft would not have to port or update Office on iOS if there wasn't the possibility that it could weaken their hold on the market if there was a Mac and iOS Office alternative. As it is, they would be insane not to support it on iOS but, without Mac OS and Macs, not doing so would be an option and, it would be a serious selling point for Windows phones. Apple's strategy is seriously broken and, it is going to be a serious problem for the company in the long term if it doesn't fix it soon, if it isn't already too late.