The problem is, demand always exists. Without people investing and creating products and services, it doesn't matter what the demand is.
China is a perfect example. There was no time where demand didn't exist, yet they lived in object poverty.
You need people with money and able to invest, and create wealth.
There was a story out of China, about a guy who went to the junk yards and started pulling out corrugated metal sheets, cleaning them up, and selling them to rural Chinese as roofing.
Now before 1978, did demand for roofing not exist? Of course it did. Why didn't anyone provide roofing then? Because you need someone to invest the money into buying the metal roofing, and invest in fixing it up to make a profit. And without that profit incentive, no one is going to do it.
Demand doesn't matter unless you have an investor creating the supply.
And then you have things that no one knew they even wanted until someone invested to make it exist.