We are investing in ICO prices because we will not experience a price reduction anymore so investment in ICO prices is likely to benefit very quickly and at the price of ICO many people hold crypto.such as economic law if demand more than supply then price will rise.
Now it is very difficult to find ICO which after completion will sell tokens at their normal cost. 
This will be a very capable to produce many more in the future. so by investing in ICO and gain more profits.