Both brothers sought out what they wanted to be themselves in their spouses. William who always wanted to be normal, picked a normal woman, albeit one that was still wealthy enough to be apart of his circle. He wanted a solid, discreet, countryside loving life. Harry through Diana became obsessed with celebrity. He’s a spare in the BRF, but he can make waves as a celebrity, just like divorced Diana who lost her HRH. It’s where he feels prized and influential, and superior to his family.