i was thinking about your post-scarcity thought experiment last night. it's an interesting question when you push it to the extremes.
on the one hand, i am inclined to agree with you. while there are reasons to steal other than satisfying material wants (such as protest and general hooliganism), one could argue that the plebs would be so inundated with their fantastic lives that they wouldn't really notice that bezos continues to stiff them.
yet on the other hand, humans are status-oriented creatures and this is a relative game. if everyone has a yacht, but bezos has 100 yachts coated in gold, then i truly do believe that a sizable chunk of the population would feel hard done by this and would cause chaos as a result. because the goal is not to acquire yachts, but to climb the social hierarchy. and if you cannot climb it through competence (perhaps you are low-iq or uncharismatic) then you instead ascend through violence (tearing apart bezos). i think this is inherent in human nature and a rare case of "bitcoin does not fix this".
time will tell. it would be nice if you were right.