Interesting juxtaposition. Right above this thread was a thread entitled "Fantasy Golf 2013". Seems like 2 threads with the same topic. LOL
Several times I have gone to US Open Sectional Qualifying. So these are guys who have already made it through Local Qualifying. These guys, for the most part, HAD all of the advantages that the OP posited. They are amazingly good golfers. A couple of them were fairly successful tour golfers (Charlie Wi, for one). There are hundreds of guys who qualify for all of the different Sectional Qualifying events again, many of whom are successful tour golfers. Except for them, ALMOST NONE of the players have a prayer of a chance of making it on any professional tour, let alone the PGA Tour.
Having the opportunity to start young, have great coaching, and have every advantage may get you into that class of players that can occasionally make Sectional Qualifying. But it is as big, or bigger, a jump from there to success on a tour as it is for most of us to even get to qualifying for Local Qualifying. MOST of these guys are great golfers who have NO CHANCE of making it on tour. It is really just as simple as that, IMO.