Because not everyone who purchases the Power add-on use Pages. For example, personally, I do not use the SEO Pages option on my site, but I do use Categorization (formerly Tagalong) and Import (formerly ProPack) and Contact Extender, all of those are included with the Power add-on but I would prefer not to have 100 listings/locations created as store pages and cluttering my overhead automatically. I will mention it to Lance, i.e. if he can have the software go through and check the status of all your add-ons to see if you had Pages activated and if it was a version that was compatible with whatever version of SLP you have enabled. The idea is to decrease the footprint of the add-ons, but perhaps it can be done easily.
Please refer to the Docs site, we appreciate your feedback.