Well, it is not an offense that participants and companies issue their own tokens, coins and do an emission of cryptocurrencies. In this case it is private money which can be compared with shares on a stock exchange. I know why you have asked this question because everybody in the modern world have got used that everything is evalued  in dollars and we do not face with private money at all that is why we do not understand reasons of creating much currencies because actually we have only dollar as a currency and we do not have experiences of having plenty of currencies in a typical life.