Just because a target-audience has >0 members doesn't mean the target is plausible or good. :p
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To transcribe an old Dilbert comic, which I think captures the sometimes, uh, aspirational nature of "target audiences":
1. Dogbert, presenting a labeled circle: "Your target market is the high income group. They're the only ones who can afford your product."
2. Dogbert, adding circles to Venn-diagram: "More specifically, they must be rich, tasteless and easily amused. I've located a cluster of them for study."
3. Scene change to outdoor lawn, one suitably-dressed man confiding to another: "That dog's watching us golf again."