The future is very much downloading games. We have also seen cost and ease of development are king; in this regard MS very much has the upper hand using p.c architecture.
Also there is a very real chance BR will fail. Have you seen seen how poor sales are for the BR format overall ? Sonys strategy was stick it in the ps3, ps3 sells ps2 sort of numbers you have a huge base of 100 million br players.
Thats not going to happen, therefore theirwhole strategy is flawed.