Construction Sand

We all know only river/beach sand is valuable and growing in price every years. Imagine there is process to convert desert sand into construction sand: it will mean deserts become valuable resource deposits. It will be the new oil(oil is getting replaced by renewables). That process exists and is called "Finite" sand.
The problem is they keep the binder paste "secret"...
https://www.fastcodesign.com/90165549/the-next-great-building-material-it-could-be-sand-from-deserts
http://materialfinite.com/
https://materia.nl/article/finite-concrete-desert-sand/
These are current sand prices per ton
https://www.alibaba.com/showroom/construction-sand-price.html

>>5
Salt is a byproduct of desalination of water which is quite advanced field with new membranes, filters and methods discovered each year. There is enough salt in the ocean and salt mines aren't exhausted yet.
Construction sand has actual shortages, sand mafias, beach theft(by trucks), mining of riverbeds in third world, rock crushing/grinding(because rock gives off great sand/gravel). Its fascinating field because only a small percent of available sand is fit for construction and cheap enough to recover(that why e.g. ocean beds filled with sediment sand are not mined yet).