1;WHY Do we have projects that places restriction for investors from certain regions.
2;Why do some project owners ban some regions from participating in the Marketing campaigns of their project but Rather allows such people to invest in their project.
You are asking the wrong question, projects are not for us, it is not a charity. It is bussines.
And the answer to the both questions is the same - regulations, projects are obligated to exclude countries which has certain rules and laws and those who are sanctioned by large organisations. Besides- crypto-currencies are not equal to ICO tokens.