I stopped buying Sony years ago when they kept trying to push their own proprietary and expensive standards.
I finally gave in and bought a Sony camera for my wife this year, it takes SD memory cards, maybe they have learned their lesson.
Yes, it was a boneheaded move for Sony to have their own memory card after SD became the industry standard. This is why I avoided buying a Sony digital camera. Sony seems to have a history of doing this. There's the Sony minidisc which, while building a small devoted following, eventually flopped and of course Sony gave us the Betamax. Funny, Sony's proprietary items are often superior to those which become the industry standard. They just don't catch on.
I do appreciate how well my Sony Playstation syncs with my Sony HDTV and Sony surround sound system. Of course, my second PS3 works just fine on the Sharp TV in the bedroom.