proprietary

proprietary adj.  1. In {marketroid}-speak, superior;
   implies a product imbued with exclusive magic by the unmatched
   brilliance of the company's own hardware or software designers.
   2. In the language of hackers and users, inferior; implies a
   product not conforming to open-systems standards, and thus one that
   puts the customer at the mercy of a vendor able to gouge freely on
   service and upgrade charges after the initial sale has locked the
   customer in.