I understand you're being upset by that and agree with you that expoiting might be immoral, however, this forum offers access to services that might be perceived (by some) as immoral as well and you were (are?) more than happy to use them...
I find this reply quite interesting as I've often thought about the ethical side of the services offered by Mikael, myself and others [and by extension the activities of users on this forum]. The difference is though, that Mikael and myself at least, are very up-front and clear about everything, with nothing hidden. With the mobile networks, it's all tricky wording with long contracts written in small-print. Even Giff-Gaff who try to appear simple and friendly will screw you over given the chance!
At the end of the day the services offered by Mikael and myself take advantage of offerings made by telecoms operators, which they are free to change at any time. If they don't want to "lose money" then they should price their services profitably. On the other hand, when we choose to take up a contract with a telecoms operator as an end user, we are basically screwed and bullied by the big guy into what they consider to be acceptable, which is always to their advantage.
All is fair in love, war and business it seems!