The precedent has been set. Supreme Court Ruling Provided the pre-nuptial agreement is fair and everyone understands the implications then it's now allowable & binding.
You don't need to be massively wealthy to take advantage of this new ruling. Many people, particularly those who are embarking on second time around relationships, bring assets to a marriage that they might not want to have to split 50/50 should things go wrong. I think it's progress.