The long game works on a few selected cryptocurrencies, not all of them.  The best example would be Bitcoin.  It's the first and the most adopted of them all.  Despite it's shortcomings and all the drama going on with it, it's still proven to be the best model to follow as far as success in crypto goes.  All these new models being deployed by the new generation of ICO's remains to be unproven.  Give them a few years.