Kalopani,
Most likely, you are not one of those who would invest. In most of the gathering, I see that most of the people who demand citizenship as a precondition tend to be people who are unlikely to invest in Nepal. In fact, they are the ones who are hoping that the dual citizenship would allow them to claim inheritance,and sell it in a leisurely pace.

However, I support the dual citizenship. But I don't think it is a precondition to investment. If there is a good environment, people invest in Africa too. The americans investing in India and China don't have local citizenship. It is the opportunity to make profit, and ability to move profit wherever they like.