Actually, many of those people who can afford to spend tens, if not hundreds of thousands on custom double guns like Holland & Holland, Griffon & Howe, Merkel, Purdey, etc... actually do take them out and aren't afraid of getting their guns dirty. They just don't care, because if it's damaged, they'll just buy another one.
They're just as pretentious as some birders... they like being seen on safari with their expensive prize toys.
Most of the people that afford guns like that are brand loyalists, and will only buy binoculars form Leica, Zeiss or Swarovski and probably wouldn't think about buying a leupold binocular, not out of anything but lack of recognition in the binocular market. If you ask them how much thought they put into their binocular purchase, you'd probably be surprised. Most of my 'rich' customers don't spend even a few minutes of thought on which binocular offers the best FOV or price/value points. Usually, they ask for a recommendation on the premise "What is the best?" and will accept anything you tell them, or they just pick a top-end name brand knowing that they're getting what they pay for.