Its hard to imagine what Apples problem is.
Every year since 1991 I've bought something new like a desktop, notebook, or now iOS devices from Apple because I could, and enjoy being an Apple enthusiast.
My point is that until the last few years Apple's quality, nearly bug free new products built the reputation they currently enjoy. Just when they're loaded with money, prestige, and successful sales they begin to falter.
Procrastinating for over two years with nothing but stubborn refusal to listen to their customers and include larger screen smartphones, now its buggy iOS issues they fail to resolve before release.
No wonder more of their past supporters are now their detractors. Its as though Apple is convinced they're never going to experience a decline in business.