While my statement may also hold for those wealthy leaders of 1800 (thanks for that piece of info, btw), I was referring to today. The people from 1800 are no longer alive and can no longer ponder on this. Judging from your comment, I don't expect you to do so either, and maybe it was poorly formulated. "flaming error" did a better job, and I regret he is not modded higher.
The point I wanted to make, is that one of the reasons why the western world is doing relatively well nowadays, is because we stole from other countries (colonies) in the past and continue to do so today. Let the Chinese pollute their country and buy stuff cheaply. Buy cheap resources from Africa and South America. And feel good about ourselves because injustice is not literally carried out by our own hands. That these things happen is sad. Explicitly saying one "no longer feels guilty" (which, as mentioned, probably never happened before either) is ignorant and imho unfair.