I agree completely that mechanical drives still have much to offer in terms of value for quantity of storage, but my point still stands that SSD manufacturers should jump on this opportunity to gain as much market share as possible. They don't really need to be 100% competitive on a $/GB basis, but if they can make arguments for the drives being more reliable, faster, physically smaller, more power efficient, and priced reasonably higher, I think they can do some serious damage in the marketplace. I also doubt that there will be many more times in the near future that mechanical HDD prices will quite literally double in price overnight and if they play their cards right they can definitely use this to their advantage.
I guess I'm making an argument for the potential in this situation, but most likely you are right about how it will actually turn out. In the end I don't care, I just need more TBs!