Unlike the HD/BD, the DVD business was never of the razor-n-blade type - where you give away one component and make up the loss by selling the other (same applies to gaming consoles, inkjet printers, etc.) DVD was profitable for all players - CE and studios - from day one.
Sony & Co. finally arrived at a place they were planning to start at: having a new market all to themselves. The problem is, they had to endure this 20 months long PITA called HD DVD that left a $2bil hole on Sony financial sheet and some non-disclosed obligations (replication, encoding, etc.) that won't allow to fill this hole quickly. And what's even worse, the consumers have "tasted" players (albeit from the losing side) for under $100.
If Toshiba, Microsoft, Universal, etc. would join the BD club, not much would be lost and at least would be repearable. But I don't think this will happen and BD has probably more problem waiting for them in the future than they have behind them. If they don't want to remain a niche market, that is.
A good lacmus test would be Stringer's fate, IMHO. If he still has his job running Sony one year from now, Sony and BD are out of the woods. If he will be "promoted" like Kutaragi - I wouldn't bet a penny BD will have any better fate than SACD.
Diogen.