This is true, investors are only interested in their income and the opportunity to get it.
In order for investors to be calm about their future income, you need to study the object of investment as much as possible before investing your money in it. Examine everything well, weigh all the pros and cons and all possible risks. And on the basis of all this to make a decision.
This is very difficult to do. I do not think that someone can get it at 100%. When you choose a project you are confident in it completely?