What needs be recognized is that "allowing" Bezos to do this is not an ideological or engineering question between what is optimal or suboptimal. It's a question of how much confidence do we have in our interventions. Humans naturally engage in trade and acquisitive behaviors. There have been rich and powerful men for many millenia before Adam Smith wrote Wealth of Nations and capitalism became a philosophy. Commerce is a default, not an imposition.
The question is whether armchair hot takes, politicians, bureaucrats, economists, and ideologues are qualified to make confiscatory decisions against "the wealthy" that will not do more harm than good to society as a result. Our world is a system that is too complex to understand easily, or sometimes at all. If it ain't broke, don't fix it. There isn't mass human misery resulting from this yacht, but preventing the order could lose people their jobs and have who-knows-what consequences. So maybe we should chill.