I feel much the same way about Sony's products as I do about Apple. I will never, for instance, buy any product that takes a memory stick.
However, there's a big difference in my mind between the two companies. First, Sony appears to be (slowly) realizing the error of it's proprietary ways. Second, as an investor, Sony is a huge conglomerate with revenue sources from many areas. While the second fact actually slows down adoption of open standards, it does smooth out the revenue stream.
There's quite a bit I could also discuss about Blu-Ray here, and while blu-ray has its drawbacks, it is (at least in theory) an open standard.