My biggest problem is that there's no way to guarantee value of your "tokens" if the product you're delivering is not also built on the Ethereum blockchain. Fo

My biggest problem is that there's no way to guarantee value of your "tokens" if the product you're delivering is not also built on the Ethereum blockchain. For example I plan on launching a mobile network - I guess I could make an ICO and whoever owns a token is entitled to X amount of data traffic. Nothing prevents me from saying one day "I changed my mind - your tokens are worthless", so that's why I don't see it ever working.