It is not a matter of whether or not a miniature DSLR (I was thinking full frame) is as good as MF (film or digital), but whether or not it is a better tool for most (as in 99%) commercial photography. Being lighter, cheaper, faster, having a wider range of lenses of all types and having the image making capabilities to exceed the needs of the vast majority of jobs makes the current top of the line mini DSLR cameras very formidable. What jobs are out there that require a MF DSLR? LF or cameras with movements are still uniquely placed, but the jobs that require movements are probably <1%.
This is not to say that there isn't a place for MF (film or digital) or LF in the world of photography, only that commercial photography has found its match and it is commercial photography that buys the bulk of the MF cameras -- or at least it used to be.
I don't know which film format will go first or if any will go away all together, but I am very worried that Kodak may not survive as it is today (which is not so good by any measure) or at all if the current downturn continues through 2010.