I agree, BV wants the truly affluent.
The problem is, the truly affluent fall into three rough categories (IMO):
1. celebrities
2. old money
3. wealth accrued through business
The first group will buy a lot of luxury accessories every season, because their wealth and image is derived from being "of the moment." Unfortunately for BV and other retailers, this is a fairly small group of people.
Groups 2 and 3 are generally not focused on buying more, more, more. The Old Money crowd often wants to show they are classy, not wealthy -- and classy doesn't mean buying 12k bags that look like Kurt Cobain shredded the ends with a pair of scissors. A friend of mine married into Old Money, and his inlaws spend their money building hospitals and financing them. These are the people who buy one or two Birkins or Chanels, not a wardrobe full of them. How many times have we seen Princess Mary of Denmark carry the same BV bag?
The Business Wealthy generally are focused on more than what they wear. I know the wife of one of the 20 wealthiest men in the world. She has fewer designer bags than I do, and I only have like 7. She spent three years working on building a museum. Her days are not spent leafing through Vogue or directing her personal shopper. (She does spend a lot of time in the gym, though).
Again, this is just all IMO. But the BV focus on "the affluent" seems to be a Hail Mary pass to me. Time will tell if it works.