I think you're likening sony's and microsoft's strategies to be too similar.
I think blu ray played a decent part in sony's strategy as they try to ensure their success in various markets at the same time. So I think on the hardware side, Sony had part of their strategy as price the system higher than the competitors but make it provide a second service which may expand its user base, and help expand our funds in other areas.
The success of this strategy is starting to show as the PS3 is starting to pull ahead of the 360 in all regions. Whether it will be a full success depends on how well blu ray can maintain.
Microsoft on the other hand, not only wanted to halt sony as you put it, but also wanted to expand their market and to make them control your full media center. The delivery of htis can be seen with XBLA and its downloadable movie service, as well as the attempts to integrate live anywhere into pc games. Whether these strategies have proven a success or not is pretty hard to tell as I don't really know how well these services have done.









