Make no mistake, when you have all the money in the world, everything can become vanilla. There's a better than good chance that those men went to that massage parlour because they knew those women were sex trafficked slaves. Knowing they are forced into sexual acts, unwillingly, is what gets them off. But they can plead ignorance, since it's some low key strip mall joint. A bit more difficult to deny if it were something a bit more personal, like having them over to the sex dungeon in their castle, or some seedy back room of a club, or members only fraternity.
No problem from me when all parties are willing participants, in the transaction. But when its women who are unwillingly forced, it's rape. Even worse if it's underage girls. These billionaires knew what they were doing and they need to be tossed in prison and the key to their cell needs to be lost.