Building more GPUs requires billions of dollars of investment and many years to build a new fab. Building more houses requires only several hundred thousand dollars to form a new construction company and train some workers. So it's not a good analogy. It is physically possible to just build more housing in high-demand markets.

Separately, GPU scalping is (was) only happening because of cryptocurrency booms which everyone knew were temporary. Not many people are naive enough to scream for AMD or NVIDIA to spend billions of dollars on new fabs because of a temporary trend. The housing supply issues, on the other hand, have been brewing for decades and are not temporary.