To be fair, the only reason I am confused is because I assumed Lauren's husband was from a very old money background based on the info about his family on older threads, and that his own wealth is really tied in with his family's money. This kind of background most of the time very strict. Even if you get the guy, acceptance from his family, community and society is minimal or non-existent.
If he's a man who created wealth for himself without the family ties or background then I absolutely can see how girls like Lauren can be married to them. Those kinds of rich guys I assume are what Anna was originally teaching about before she changed her direction to high society/the elite/etc.
Also, the people talking about what rich men like over these threads emphasized a great personality, intelligence and discretion i.e they won't embarrass them nor do they have reputations as overt gold diggers. I assume Lauren has all of those qualities and connects with her husband on more than just the physical level.