Not if you don't need the market share.
Even better, Apple could've posted a large disclaimer on the iTunes' download page: "We don't guarantee 100% Windows support"
Poor people tend to breed more because:
You could sterilise them now, but the slums would still be repopulated in no time if you don't tackle the root causes of poverty.
That's “non-open open source”, with two opens.
In other words, it's the Cathedral model.
Never let someone who says it cannot be done interrupt the person who is doing it.