Have to agree with devil, shockingly, on the last post. Besides, the distance in space is so vast that it will take decades, if not centuries, to send someone to Mars. We all know that the first one is basically a suicide mission. Colonization is a generation away and probably only the rich will get the chance, once it's stable. Whatever technologically discovery in space will eventually be shared anyway; a lot of our products are produced from other countries anyway.
Having said that, Mr. Green is not saying we should abandon space experiment/exploration. Just that more money isn't going to solve anything.