i disagree. u still need to understand the philosophy of rugby. that doesnt come from money or quantity of people. its a slow process that requires a national identity and effort to create their "style". i think NZ has shown that it takes a lot more than just money and numbers to come up with a winning formula.
US runs rugby like they run their gridiron. the coaches have complete control from the sidelines and dont let the players develop leadership skills on field. if the coach doesnt know what theyre doing then the teams screwed.
eg in NZ, the coach is in charge until kick off, then it comes down to the players and the captain. the coaches here arent constantly in the players ears calling plays. in the US there are audible plays called through out the entire game from the sidelines. US coaches need to learn to butt out and let the players develop their leadership skills.
also NFL players arent that much better physically than rugby players. theyre about as big and fast as league players. once they get the fitness aspect down they'll trim down and be just as mortal as international rugby players are now.