Theology is contextualized theology and it also applies for prosperity theology (I want to refrain from giving a value judgment on this matter, but, yeah, this theology is perverse). So even though it originates from the land of the free and home of the brave (what does not?), it continually evolves into different forms in other places.
If the people like to borrow money, then you will put your god into debt. Your god owes you something. So it is actually fine to demand wealth from your god.
If success in the society is defined by your merit — by the number of your achievements, by what and how much you owned, by how high you have climbed the corporate ladder, then you will worship a god who will help you to attain those goals and aspirations. Prosperity theology, then, evolves into some kind of meritocratic prosperity theology. To look it in other way, our society rewards and reveres the successful ones and hence in order to proclaim our god we need to be successful as well. We need to be as influential as the others do so that our god is at least worthy to be proclaimed. Or, even better, to be more influential than others so that it is proven that our god is actually better than the rest of them. In the end, Feuerbach is right: god is actually only a projection of our own values and desires.