I agree absolutely that those without Fabs are going the way of the dodo. They will have to differentiate on software offerings, but even that will wane as the companies with valuable software tech are vacuumed up by the fabs. HDDs imo are kind of like tape, they will just progress down the storage stack into lower and slower tiers. No doubt the performance tier is going to flash almost immediately, but I'm not sure about the capacity tier, at least for a longer period of time.
Flash Forward (SanDisk/Tosh) have 2 fabs, Samsung has 3 with one being built, Micron has 3 and Hynix has 2. That is a long way from being able to support the EB capacity required. I personally think we will be on to ReRAM or some other memory tech before flash can supplant HDD.