These websites seem to be last updated decades ago, which is prehistoric to most casual browsers. There's no doubt there is great content on the general internet, but these examples I would classify as "legacy".
I can see why the website owners would be interested in getting traffic to recent websites, but why would you be interested in recently updated websites?
Stores typically stock recently manufactured products. Once the manufacturer discontinues a model and inventory is gone, that's a wrap. Sometimes the product was good and gets replaced by an inferior one (in the spirit of old burger king vs new post-acqusition burger king), other times it's just small tech refresh tweaks, and everything in between.
A real litter of inconsistency between unrelated external organizations and varying markets and skill sets.