I think you don't completely understand the economy of micropayments or how Raiden fits in. First thing: forget about fees. Don't think of Raiden in the same way you think about ETH and gas for TX. Instead, concentrate on the demand for RDN as it becomes increasingly used as the currency of choice for micropayments. For example, uRaiden - the only token which has a built-in smart contract is RDN; everything else needs additional coding to handle; so RDN is the only out-of-the-box solution for companies that leverage micropayments with it. While Raiden Network will accomodate other tokens more readily, RDN will still be a dominant mpay currency; and don't be fooled- the market for micropayments whether from users or device-to-device will be large and growing.