That is the way more sophisticated users of such a mining phone can view the economic proposition. The...majority of...mobile phone users...won't even need that level of sophisticated analysis... Rather for them it is simple. They get a discount on the device and/or they get these cute ringtones and other...upsells for these "bitcoiny" things the phone gives them. And it is "free", uncomplicated to use (all automated), they won't have to "pay" anything for this. Thus it is a no brainer for them.