Just as in the case of XX,XXX - XXX,XXX .info domains, many domain investors are realizing that although type-in traffic is lower for these domains, they still have wonderful SEO potential and are still worth a lot of money. It's that simple.
Not much. Those domains are trademarked, and many domainers would shy from them for fear of incurring the wrath of Apple or Microsoft. You want generic domains, not product-specific ones, most of the time.