Interesting new Blind Gossip (sorry can't link) explaining why the RF are being so compliant to the Sussexes. BG have been bang on for ages re those two.
Anyway the RF obviously all love Harry and are worried about him, though extremely angry. They are banking on the marriage failing within a few years and want to leave all avenues open for him to return. If they cut him off they think he will be forced to stay unhappily within that marriage as he thinks he has no choice. Also they will not criticise MM as they do not want her to become a martyr and thus in Harry's mind make it more an 'us against them' thing. They are playing the long game with the view to Harry returning.
Anyway the RF obviously all love Harry and are worried about him, though extremely angry. They are banking on the marriage failing within a few years and want to leave all avenues open for him to return. If they cut him off they think he will be forced to stay unhappily within that marriage as he thinks he has no choice. Also they will not criticise MM as they do not want her to become a martyr and thus in Harry's mind make it more an 'us against them' thing. They are playing the long game with the view to Harry returning.