I am sure they will do Oprah. They are celebrities and publicity will increase the value of their royal Kardashian brand.
I imagine Michelle Obama will be a little more cautious. She gave advice that Meghan should take things slowly as a royal. Learn the role. Instead, she has played the victim card all the way and moved out as soon as she had a baby.
In spite of the ribbon-strewn announcement, the Sussexes have treated the queen with tremendous discourtesy. Michelle isn't thick. She will see what they have done - and who they are. In the Obamas' shoes, I'd steer clear. You wouldn't see the Obamas on Kardashian television. This is going to look a bit like an upmarket version of that.
They wanted the money opportunity. They are monetising their titles and their fame. In the UK, they will be unloved and unwanted. We know who built the brand. And we admire the fact she plays her important constitutional role because she loves her country. She does it with grace. She never whines. She earns her highness.