I was wondering : if you do an ICO for a coin and sell n coins, each of it for a price x. Then you get listed on an unique exchange and you use 100% of the funds collected during the ICO to put a huge buy wall of n coins at the price x. So every investor can get his money back if he wants and there is a 0% risk. It could attract far more people. Question is, what are you gains in this operation ? Well you could buy yourself on your ICO so you would get a part of your own coin and then sell it for more because the price of your coin cannot be less than x due to the huge buy wall.
What are your thoughts about that ?
In the first sign of trouble everyone will sell and you will have made ICO for nothing
you don't seem to have a firm grasp of the point. even if the price of the tokens goes down to nothing, that typically doesn't affect the actual project. the project is one thing, the market is another. they are not the same. any ICO that manipulates the price of their tokens/coins in this manner is obviously a scam