Nazis did Gleichschaltung, which wasn’t as much about owning, but about control. They centralized stuff, subverted and merged organizations. But indeed they also expropriate a couple of groups and looted other countries. That usually became national or party property. But people also took stuff for themselves. And they also destroyed property … like book burnings. The Nazis didn’t do well economically. It was part of their plan to loot and exploit other countries. German economy became most efficient when there were already fights on German soil, which means they didn’t work as efficiently as possible before that. England did a lot better due to having John Maynard Keynes on their side.