A good number of newly rich people have had desires of emulating aristocracy and royalty, sometimes unconsciously so. The Fuggers and Medicis are good examples of this, they made a lot of money from banking, the latter practically ruling over a city to themselves and married their children to aristocratic women before getting ennobled themselves.
Prince William’s wife also came from a similar background (at least from what I remember) and Prince Harry’s wife was also a rich actress. Grace Kelly also married into royalty and became a princess herself so it’s inevitably going to be the case even if it isn’t always so. It could even become more common in the future.
That is should more families increase their wealth, they want to elevate themselves by marrying into much more powerful, wealthier families. They’ve been doing this before and will continue to do so.