> People have done the math. Land availability is not a bottleneck on this.
I'm sorry but people have done the maths and consider land availability to be a major bottleneck for solar and wind (with the fact that it is intermittent). That's like one of the first point put forward in the Bill Gates'book everyone seems to be talking about nowadays. Offshore capacity means it's harder to estimate the ceiling for wind production but it doesn't seem to be the slam dunk you would like it to be especially when you consider that the world consumption will likely keep rising for decades as population grows and more and more get access to electricity.
> If nuclear was the slam dunk you're assuming, China would just do it.
China has scaled down its nuclear investment under the dual pressure of significant public opposition after the Fukushima disaster and a need to tighten its investments (China's debt situation is tricky to manage and the CCP absolutely wants to avoid a situation comparable to what happened to Japan in the 90s).
China isn't the be all end all regarding energy policies.