I don't see nothing morally wrong on their business model. I'm just pointing out it is illegal under the current law and that's why there's no Spanish Uber. Also, we all know this is not ride-sharing, just a cheaper and unregulated taxi company. Blablacar is ride-sharing :)

Transportation costs in Spain are far from free, but if you were shocked I would recommend you not visiting Britain for your health's sake. Well, I actually recommend visiting the country because it is beautiful, but just don't hop on a train.