I will note in fairness that for electronics, it can indeed become problematic for any manufacturer to create new replacement parts after that many years simply because the components originally used become obsolete and unavailable. This is not a unique Festool issue...it's unfortunately common across many kinds of products. At some point, replacement parts get used up because they can no longer be manufactured. I do agree that it would be nice if there was some small incentive to upgrade when something like this happens, however. I run a CT-22, but until the last few years, its use was mostly occasional. If it eventually dies, I'll buy another, current product to replace it. I'm not unhappy in any way with the performance or the longevity of the extractor.
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The most expensive tool is the one you buy "cheaply" and often...