This is a very interesting project they plan to start. I suppose they can take the model of the micro nation and with 0,5B dollars they can buy a lot of land! It's gonna be a huge micro nation on km2 :) Add to that some local economy make sure the economy is not spending more than they earn, this new country could support itself. I actually hope they try to get rid of monetary values, but add AI in large quantity and create a AI executed new country where the members in that country can spend 24x7 doing whatever he/she pleases.