I believe there is a good reason on why people should concentrate on the motive behind KR's post...
For years, MF was under-specified than FF cameras. This was never the case during the film days, during those days, MF was bulkier but that was all one had to deal with.
One has to remember that until the Cmos 50mp Sony sensor hit the market some three years ago (introduced with Hasselblad H5D-50) there was no high ISO, no video and no LV available for those that where MF equipment users. On top, for one to use MF, it would cost some 10X the price of a respective FF equipment although it was under specified in crucial specs that was causing the equipment to under perform.
As a result, it was more than MF sales that were affected, Technical camera makers where also affected, them being trapped with the (under-specified) image areas one had to use and the cost of them. Let alone the fact that cost did shoot over the roof due to the "special" lenses needed or the extra shutters and sliding backs one had to use...
Then, the Sony α7 appeared and it being mirrorless, the Technical camera market started picking up again, it was clear that functionality and (significant reduction of) cost was more important than larger image area size.
By the time the above history happened, both Hassy and Phase were under specified, very expensive and as a consequence, sales were dropping at a rapid rate which was leading with mathematical terms to the end of the MF market. Simply, MF market of modular systems sales, dropped down to negligible as to keep going. Only thing that attracted some customers anymore, was the "better image quality" (due to larger sensor), but even that, was improving fast with FF cameras to the degree that more and more users were saying the "what the hey" word.
Then, one day, one out of the two makers of that (almost not existent) MF market, decided to "wake up", they worked their "a** off" as to STOP being under specified, make a mirrorless and reduce prices... The other maker, stayed in its deep sleep thinking that "we will always have customers - "its the (fake) "image" that we have to work on" and then they decided to use "past practices" for keeping their "image"... forums and (fake) propaganda.
It's as simple as that... Fuji GFX is coming next month, Hassy isn't under-specified anymore, prices have been reduced, the technical camera market will boost with the GFX (used as image area with shutter and LV) coming. People (and pros) will use their existing line of lenses on their (new) view camera which will be smaller than ever and (by far) cheaper than ever. The Sony a7 (and more mirrorless cameras to come) will provide a "first step" for people to upgrade later towards MF (especially as use with technical cameras is concerned), Hassy will continue to collaborate with "talented makers" (as Perry Osting calls them) as to provide (very beneficial for them financial) support to the higher end of the market.
Nobody will miss those that are stuck with past practices, they can continue sleeping as much as they want, nobody will invest on them either... simply, nobody needs them and (of course) all FUD will return to the creators of it just like the ancient Australian weapon (the boomerang?) returns to its origin.