Is it different than any other professional sport though? If you can't win medals, sorry they will get another NCAA kid who can. Ya.....it's a meat grinder but unless you are truly a phenomenal talent, the time you get to develop as a professional is a short window for a reason. Nike and other companies want to win, not develop every kid to be the "best runners" they can be. This isn't HS XC where we want the best for the kids on and off the track. The powers at be want American world beaters wearing their brand. Period. This is a business, albeit a small one compared to most other sports.
*Listen to some Mike Holloway interviews about his recruiting and training philosophies. It isn't just pros who have this take on what it takes to win in elite athletics.
I get there is a balance between developing talent and maximizing god given abilities for long term success. BUT.....professional sports is inherently a meat grinder. Track is no exception. I believe it is naive to think every NCAA champion will make international teams and break through consistently.....look no further than our friend Ryan Hill! It's hard to make it and at a certain point you either do or you don't. There are too many talented athletes out there and sadly not enough resources in our sport being dedicated to athlete development to have a long leash for professional distance runners.