Re Royal Lodge , I agree with @IcedPurple upthread , PA has been granted a lease which will outlive him. I think to get him out it will have to be a technicality - so eg he cannot afford to pay for keeping it in good order. I don't know how accurate this report is but does mention he can only pass on the lease to his daughters. But it is Crown Estate property so if he doesn't keep it up to snuff ( exterior and the interior - which I think has furniture , paintings etc from the Royal Collection) that might be a reason to break the lease. Passing it on to B & E I think is as Cloud Cuckoo Land as H passing on the Invictus Games to Archie.
It will be a slow train coming but I bet PA will be out of that house sooner than he would like. I think KC has started moves - PW may be more hard-nosed.
ETA I suspect part of H ignoring A in Spare is A was pretty much villified already so he was going for the bigger guns.
https://www.bbc.co.uk/news/articles/cly3k28w31zo