This is a great fear of mine. I didn't care much that we lost Apperture, because I'm not that big into photo editing, but I would care if we were to lose Final Cut, and therefore the phasing out of pro photo editing software scared me still. Hell, even my school actually relies on FCP for their media production classes.
Absolutely- back in the day Steve Jobs talked about the product matrix being mad up of consumer and pro-oriented products (i.e. iMac and iBook, Power Mac and Power Book, iMovie and Final Cut, iPhoto and Aperture). The Final Cut Studio line has been streamlined and put at a competitive prosumer price but left out features and we have lost other titles like Shake over the years.
With the departure of aperture (which I use primarily for storage and light correction purposes, and use pixel mayor for heavy edits and compositions). I really am looking into third parties for my software needs. Although a lot can be found on creative cloud I am not a fan of the subscription model-Quark for indesign, pixelmator for photoshop, final cut for premiere (still works and received a minor update last week). But still worrisome to me in the long run-especially when they loose their lead without a replacement announced.
What scares me is the recent history of crippling software updates, that still don't have many of the features that were lost in translation. Final Cut Pro X is an example, and has received many of those features back, iWork was in a similar boat and still hasn't gotten back some features from iWork '09, like in pages where you could link text boxes.