I think the poster's point was that he spends a lot of money on apple products, relative to his income. To understand apple's success, one should look at how much money ordinary people with ordinary jobs spend disproportionate money on products they wouldn't otherwise.
There's a graph somewhere of yearly sales figures of various cars vs the cost of those cars. There's a general exponential decline from say the toyota camry, which costs reasonably and sells a lot, to a Bentley, which is the opposite. But there's an irregular data point with the BMW 3-series, because many, many people stretch to afford it. It sells disproportionately well for that reason.
I'm not assigning judgment on how anyone spends their money, just pointing out that there are human reasons for business success and failure.