Pump and dumps and market manipulation have been going on for years. They're nothing new and will likely continue to happen. ICOs seem to be growing more and more each month but they'll probably die off eventually as investors get tired of all the scams and losing money on them. I think people will become more wise to them and where they put their money and only invest in the ones that actually have something worthwhile behind them, but at the moment the majority of them are just get rick quick schemes.