Although there are many good ideas out there, aren't you safer to invest in an ICO which already has a functioning and proven product? ROI is much more likely in this scenario
It's true actually but depends, if the project is really looks promising and have a good team behind the project, I will invest on that ICO. Of course not only by looking at white paper, there are many good investment too on ICOs that still fresh and new to develop the project but yeah, the risk is more bigger.