> They wouldn't even have a brand on their dishwasher - it would be commissioned by an architect or interior designer quietly maintained at regular intervals by an appliance engineer who has been either supplied-by your core op-secs team or thoroughly checked out by them etc etc.

I _absolutely_ do not buy that very rich people have custom dishwashers. Like, _why_? There's no way it could be as good as a mass-produced unit; you benefit from massive economies of scale on the design, there, along with lessons learned from previous models.