Besides the logistics of it all being a massive deficit in the, one could say literal, pie in the sky presentation is the issue of future repair, upgradability and subsequent clean up.  With land lines a break means replacing something that is readily accessible and for the temporary time replacable/reroutable.  Also with connections stretching all across the Earth it is a simple, if time consuming and costly, procedure of picking up the equipment/replacing old copper with fiber or fiber with whatever in the future.  But with satellite what is the process for upgrading and reclaiming old tech/cleaning up the litter?