Roughly translated, you've essentially said, "people that are in to X are much more likely to spend more money on X than people not in to X." Sorry to say, but cyclists are not alone in this, quite the contrary - a lot of people have something that they're really in to - cookware, cutlery, audio and/or video gear, automobiles, boats, photography, musical instruments, etc, etc. When you get in to high-end anything, there's a point where improvements are more difficult to quantify and more difficult for a non-enthusiast to appreciate, but that doesn't mean that they don't result in more enjoyment for the end user.