I think the more modern version of this arrangement would be for Alexander to work at/start a think tank, which has the advantage of being tax-exempt for the patron.
Or for a less formal, more distributed solution, there is of course Patreon.
Or for a less formal, more distributed solution, there is of course Patreon.
Diogenes replied, "Learn to live on lentils and you will not have to be subservient to the king".