SE is not Sony's friends. Businesses in general are not freinds. They are businesses.
For years SE and Sony had a mutually beneficial relationship. Sony provided a dominant platform and SE was free to focus the development on that platform and save significant costs without losing much sales.
Sony, by its own missteps, lost the dominant position of yesteryears and with that its interests were not aligned anymore with SE's.
SE did what every business is required by law - act for the benefit of its shareholders. In this case - it correctly recognized that its shareholder value will be much higher if it will release its games to the more prevelant gaming platforms of this generation. And it did what it had to do.
Had SE put Sony's interests ahead of its shareholders, it's board and management would have failed their bona fide duties and would likely be ousted by its share holders.
This is business. Not social.
Prediction made on 11/1/2008:
Q4 2008: 27M xbox LTD, 20M PS3 LTD . 2009 sales: 11M xbox, 9M PS3
