I agree with easybee. Playing, as they saw it, second fiddle to William , Katherine and their children for all time with no chance of moving up the pecking order was something they(?) couldn't tolerate! Such a shame about the Commonwealth, they would have been perfect for that extremely valuable role and, as it appeared to mean so much to them, would have made them important in their own right! The Queen offered it to them with no strings attached, but it wasn't good enough! Harry knows perfectly well how the RF operate and should have made this clear to MM before they married, but I expect he was afraid she'd leave him!
I think the Queen had flowers of the then Commonwealth in her wedding veil all those years ago. She took it seriously, MM clearly didn't. I watched the wedding, well, some of it! I thought it was a bit over-the-top but if it made Prince Harry happy, then fine! Now, it just seems that it was an expensive sham and a complete farce!