there are some coins that have prices fall below ICO but a few months or years will have prices going up again and I think it depends on the development of the coin whether it has a good project and how the work of the developers to develop the coin
i certainly agree with you. there are also lots of factors that can trigger the price to go up, such as what you have said. it could also because of the hardwork of the team behind, and further developments. it could also because of some new investors and whales playing the market. Lots of it has a point and it is always that the market is unpredictable.