Originally Posted by Dare

The first three are decent enough points.
The next three are just cheating to puff up the list. They should be consolidated into one point. Everything gets cheaper over time.
#7 is irrelevant. The trojan horse effect was important to beat HD-DVD, but the market I expect they're aiming Blu-ray at is way bigger than the PS3 audience. Let's face it, they aren't going to sell unlimited numbers of PS3s, or numbers that match the number of DVD players.
#8 is just silly. Just because Sony can't afford to have Blu-ray fail is not a magical guarantee that it won't. Blu-ray probably won't fail, but it won't be because Sony is motivated by imminent death. If the public likes what they're peddling, they should do all right. If not, well, the history books are littered with failed companies that couldn't afford to have that one thing fail. That is not a good reason why Blu-ray will succeed.
I don't even think #9 should count. Might as well say "they'll just stay in business and make products that people want to buy." Okay, obviously. "They'll market effectively." Right, but how do you know they'll do that? How do you know it'll work, unless you believe Sony is infallible, and will naturally succeed at everything they try. Sounds like fanboy crap to me. That's also not a valid reason. And let's face this one too. Blu-ray will not be pushed onto the public. There's nothing Sony and friends can do to make it "resonate" with the public. What, have they been keeping Blu-ray under their hats until now? Have they not yet unleashed their full marketing power? People either give a crap or they don't. The people who don't will get around to HD eventually, when their old stuff dies and nothing else is available to buy. The people who are interested are already there in spite of Sony, or are there in spirit if money doesn't allow.

So I see 4 good reasons here.