Nvidia's been making their own CPUs for a long time now. IIRC the first tegra was used in the Zune HD back in 2009. Hell they've even tried their hand at their own cpu core designs too.
This was also kind of the case with the PS3. Its sales weren't fantastic at release, partially because of its... $600 (?) price tag. But even at that price, at its release, it was one of the cheapest ways to get a Blu-ray player, and many people bought it for that.
(clicks link) time to get /sad/ about being a SEGA fan again.
More seriously I wish some of the old consoles were officially opened because the absolute install base of PS1 and NES compatible hardware must be insane. Indie NES games specifically have become popular lately, but I don't think any of the 3D capable consoles are popular or open targets.
Tegra X2 and Xavier are still sold today and contain NVIDIA-designed CPU cores. The team behind those is building new designs too, I wonder when they’re going to announce something.