BLU-RAY
Coming in a strong second place in the console war should be worth it seeing as they just won a format war for a market worth $40-50 billion.
Edit: And yes, the BDA consists of dozens of companies, but Sony and Panasonic are the principal patent holders of Blu-Ray technology, and they recieve the lions share of royalties on licensing Blu-Ray tech.
Look at it this way, Sony is recieving royalties on EVERY Blu-Ray disc sold, which means they recieve royalties on all Blu-Ray movies, and they recieve royalties TWICE on all PlayStation 3 games (once for them being PS3 games, and once for them using Blu-Ray discs). They also recieve royalties on every Blu-Ray player sold, something that is often overlooked (the $40-50 billion figure comes from movie sales alone, if I recall correctly).