Canon CEO: Semi-Pro APSC DSLRs are following the Dodo ...

I suspect that it's pretty much inevitable that Pentax will eventually offer a FF sensor. Nikon for years stated that they wouldn't be doing it, and eventually they caved.

Which is a good thing, FF has uses and APS-C has uses, I don't think it's good for pros and serious amateurs to be limited to one or another. Had FF become affordable 10 years ago, you might not see the dedication to the format, but at this point, it's going to stay for a good long time. Us long lens addicts have to have our fix and a FF camera just can't give it to us.