What are you actually losing here that you can legitimately complain about? You still have priority over the extra traffic, which you quite rightly suggest will be minimal. At most it'll cost you an extra couple of pennies a year in power, which you could probably save elsewhere. But what does it gain? For people like me who are constantly travelling, the BT equivalent gave me connectivity all over the UK for a pretty decent price. Over the years I've subscribed to a number of similar offerings in different countries, and it's always been a good cheap way of connecting while on the move. In fact, this would be a big selling point for me. Why should I refuse access to unused bandwidth that I'm not even paying for when it would benefit others? What does it actually cost you?