Many of them are a gamble. It's all about the utility. If the coin can prove that it will serve a valuable purpose over the long term, it could be a solid investment, especially in the early going. The problem, in my mind, is that many of them are trying to replicate payment systems already in place. I don't see a majority of consumers trading in their debit or credit cards (or even fiat currency, for that matter) so that they can use a business's token or coin for a transaction. There needs to be a deeper level of engagement and utility for the masses to buy in.