A tablet with a keyboard is basically a pc. Heck even without a keyboard I think a tablet covers the definition of a PC. But if you mean a traditional PC, aka desktops and laptops. The markets will eventually completely merge. Microsoft tried doing this with windows 8 but failed to satisfy the tablet crowd and alienated the PC crowd. Though someone, maybe even microsoft's next illiteration, will successfully manage to combine the two platforms.
Traditional PC sales will not experience a resurgence for the same reason digital camera sales became a niche product after the rise of smartphones. Only enthusiests will need PCs as tablets get closer and closer to emulating everything that the majority of PC users need.







