DSLR sales are at an all-time high despite mirrorless intrusions.
Nikon just released God's DSLR the D800 with an OVF.
I think the OVF is here to stay.
Prisms are static and powerful, more than any sensor at relaying 100% Dr with no latency. Mirrors are a decades-old sunk cost, so have no R&D run-up.
Sure, if you're willing to spend 3 large+ for the D800 or 6 large for the D4. The finder on the D7000 is just barely passable. Most dslrs use cheap, dim penta-mirrors, not heavier, pricier glass prism finders.The Sony EVF on the NEX 7 and tack-on OLED finder for the NEX5n are great for anyone not shooting fast action. Mirrorless cameras are also tiny compared to the bulk of a dslr.
There was quite a disagreement a few days ago with one person arguing strongly that film was NOT profitable, and here we have the proof that he was wrong wrong wrong. Kodak will apparently stay in the film business fir a kibg tune,
In fact, I think that the film division represents a major portion of the Kodak land ownership and personnel. However, to answer another question, I doubt if they would ever bring back B&W paper, as the entire plant has been demolished. It is like being in a time machine running backwards and looking at Kodak Park implode.