Jobs is taking some chances, but I can see his side .....
Far from his position "making no sense", I think it's a calculated decision that makes plenty of sense, but is obviously not without some risk.....
First of all, how many of you have actually been storing info on blu-ray discs you burnt with recorders? I ask because I know from my experiences with relatively commonplace dual-layer DVD+/-R recordable media, it's simply not that reliable a storage medium! Sometimes you burn a dual-layer disc and it reads fine on another machine, and other times it doesn't. There's so much information packed in each centimeter of space on one of those discs, too, a tiny scratch or scrape can wipe out hundreds of megabytes of data! Meanwhile, the media itself is generally not made very scratch-resistant! I've got scratched up DL DVD media that was damaged simply by it getting automatically sucked into and ejected from slot-loading drives!
There are some fundamental differences in the commercially pressed optical media you get when you, say, buy a Blu-Ray movie at the store, and the media you record onto with a personal recorder drive. The commercially pressed stuff is FAR more reliable, long-term, than anything you can burn.
Honestly, I think with as much data is packed onto a blu-ray recordable disc per square inch? They should be encased in some sort of protective "cartridge" at all times, and not even be allowed to handle directly with one's fingers and slide into slot-loader drives and such! From that standpoint, the format simply isn't appropriate for anything other than commercially pressed, pre-recorded content.
And secondarily, Apple/Jobs doesn't make a dime every time someone goes out and buys a new movie on blu-ray disc. However, he *does* get a cut if they opt to buy the movie digitally, via iTunes (or rent from, say, an AppleTV) instead. So discouraging the use of that format stands to benefit him financially in that respect, as well.
I don't know who all these supposed computer buyers are out there who consider a new Mac, but wind up going with some Windows PC instead, simply due to the lack of a Blu-Ray disc player in the machine?? I haven't encountered a SINGLE instance where that mattered to anyone I know! The fact is, most people interested in playing HD Blu-Ray media are shopping for dedicated set-top players for those discs, or using something like a Playstation 3 to view them. Their reasons for buying a new computer have little to do with wanting to watch new movies on it.... If they're looking at a Mac, it's usually because they wanted less spyware/virus hassles or heard OS X was easier/more friendly to use and crashed less often than Windows, or they just have a general idea that Macs are "better quality machines" with better support and local stores you can take them back to for assistance after the sale. They wouldn't discard all those concerns over lack of a blu-ray drive in the Mac!
Job's position makes no sense. Very hard to believe it is real. With HD camcorders and everyone making home movies, what can people output and store them on if not bluray? It's as if Macs never included cd drives in order to promote iTunes. CD drives were a storage breakthrough, so were dvds and now it's bluray. Modern digital cameras can easily consume 10GB of space in a day, backups should be to bluray, dvds are too small. Lack of bluray with no alternatives? It's just idiotic.
On the other hand I have put a bluray drive in my 2008 Mac Pro which I use for these reasons, with Toast. I understand, though, that many people have problems doing this because not all bluray recorders work in a Mac. It is all a very unsatisfactory situation and I would certainly believe it is hurting Mac sales, and because it is so obviously customer abusive, it is hurting Mac goodwill in general.