Well they should come up with a better solution then. The Wii was fully BC with the GC and that console was 250 bucks.
The wii is essentially just using advanced GC architecture. That is what allows the BC. The PS4 being nothing like the PS3 (nothing is like the PS3) is what negates BC happening outside of a software emulation solution (which is not easy either).
Besides, Nintendo dropped GC BC in both Wii hardware revisions.
Fair enough, but the WiiU was fully BC with the Wii for 300 bucks. It can be done. Its just not good business.
Same as above. Sharing architecture makes BC a lot easier to do.