I just don't like this idea that Charles should give them more & more money, the titles, status and anything else they desire.
a) He just really doesn't need to do that.
And b) I can't see how that would truly improve their mental health. They got away from the BRF as they wished, they're living in their place of choice in a lovely house, they have got lucrative business deals, a child & another on the way, yet they still don't seem happy. So I don't think that more money from Charles & titles for the children etc would make them so. It's a deeper problem and I still think that unless they are willing to to develop self-awareness and take responsibility for things themselves, it will not change.
If Charles were to cave and give them more money, he'd be widely criticized by the public, and he can't afford that.
Nor do I think that would improve matters; Unless Charles could miraculously make Harry equal to William, the Sussexes will remain unhappy.