If people are worried about the cost of wii-u when taking into account the tablet screen how is sony supposed to release an affordable system that massively outpaces wii-u graphically has an HD screen on the tablet in addition to the additional controller processing power to further differenciate it from the wiitablet?
It won't matter if sony copies nintendo if their console is 500+ dollars again, they don't have the post ps2 goodwill to sell anything like that, nor the cash to take such a risk.
Plus I can be happy with the wii just because you have to by a nintendo console to play their games anyhow, and everything else that matters is pretty much on the cpu with better graphics and control than the HD twins anyhow.
Also the wii being the wii allowed some awesome niche games to prosper that never would have got greenlit for the PS360 systems (NMH, LKS, Zach and Wiki, Endless Ocean, Madworld etc.)