I suppose there is Edward and Sophie to take up some of the slack.
But it is just as well that William doesn’t believe that his right to ‘thrive’ as opposed to survive, comes before duty. That was the danger with marrying an American, perhaps why royals traditionally married other royals (from other countries. Luckily there are many areas of service - firemen, health workers, chaity workers, thousands of unpaid charity volunteers etc, who find that in putting aside their own wishes in order to help humanity, they achieve real happiness and do actually thrive ( as long as they are not overworked), This is my concern for Harry - he is conflicted between duty and choice, and in giving up duty he may, one day, find that life is empty. I hope he finds opportunities for hands on help to others rather than just photo opportunities for publicity on a website.
Maybe now is the time to drop the Commonwealth connection and for the royal family to become more like the other European royals. William and Kate could cope with that. Coming after Brexit I see Britain sinking fast in International status,but that is not a bad thing. I think individual countries need to be left to steer their own path, but be protected from take overs and manipulation from others and receive help when needed, from a much strengthened and more universally representative, United Nations. ( with no right of veto). There should also be a mechanism for an International body to step in to prevent internal conflict and persecution of minorities. Sorry this is way off the point but I am making the case for dropping the Commonwealth without abandoning poor countries to their fate and vulnerable to take over by the big guys.