Interesting, how that happens that there is any sales of artificial lemonade made from chemicals in a country where lemons are domestic product, and not even expensive one?

IDK, it is like selling artificial flour in Russia made from chemicals instead of real wheat/rye, artificial mashed potatoes in Belarus or artificial apple pies in Poland.

I could get the idea of selling instant coffee, or premixed cake mix, people are lazy and all that stuff. Also I understand that making ready beverages in bottles/cans from chemicals could be profitable, as they will have much longer shelf life than natural ones. But there is no any difference between making lemonade from a fresh lemon with spoon of sugar and making lemonade from that powder.

Does anybody really buy that stuff, or it is just occupy supermarket shelves since it have long enough shelf life and stores like long shelf life products?

Really, I don't see anything really harmful in the list of ingridients of that powder, titanium dioxide is just white pigment, naturally occuring in soil in noticeable amount, so you are daily breath it with soil dust while there are no rain. But the whole idea of making things like this lemonade powder makes me puzzled.