I can tell you that IGoogle & Amazon have absolutely no problems running my full node and neither do the people around methem. So my life and my their experience and that of the people around methem does serve as a counterfactual to what you are saying. Of course some people will not be able to run full nodes forever but we should not expect them to especially when the sacrifice that this would require would be to great. With sacrifice I am referring to limiting the amount of people that can use Bitcoin.