"Alone the sales of the beginning 2011 will prove this." Actually, sales of the begining of 2011, and every year previous, prove it's falling short of expectations, and is growing SLOWLY.
Online downloads are growing FAST.
Those are the marketing FACTS. So many reports out about this over the past 3 years, I won't even address them individually.
The US is the slowest Internet and cell phone network of all industrialized nations. I have a cousin who works in internatinal advertising, lives in Tokyo, and says Blu-Ray is pretty much laughed at there, since Internet download, not to mention mobile download/streaming is so much faster there. I have family and friends across the globe who echo what the scientific facts report, we are behind the rest of the world in this area.
No, Blu-Ray sales at any time don't prove it to be viable at anytime, anywhere. Where do you get your information?
Another comment made, no, optical media will not disapear soon. DVD-5 is still alive, but mostly as a data transfer medium. Just as Blu-Ray is mostly used for data transfer/backup. But even with backup/archive, DAT and LTO tape is once again making a huge come back in the professional, and now the prosumer (look at Bru) markets. More reliable than any other medium on the market, lasts longer, been around longer, proven.
Blu-Ray, it'll die over the next 5 years as a delivery format for movies. It'll be in the same stable as SD DVD is now. And if you think it's going to take over the world, you need to travel to other countries, and research the marketing data. It's just languishing between gaps in US techology trying to catch up to the rest of the world.
Also, remember, in Asian and Europe, Apple's Mac computers hole much, much higher market share than here. Think about it...