In my not so humble opinion, the following:
1 - I believe direction, investment and success do come from coaches or some other original motivator. I think that the best coaches in America are the successful high school coaches. A delegated stand-in at high school is more the norm than having an experienced motivated ex-Olympian giving back to the sport. College coaches? Don't get me started and I'm one.
2 - For the US's strength, i.e. diversity and numbers, yes, we do lack having many great, or even good, coaches at the high school level (Eddy, there certainly are a lot of fantastic HS coaches, but not enough), which leaves us with a few well developed kids, like Ritzenhein, able to progress along the same time line that our international competition progresses; but it also leaves us with volumes and volumes of way-underdeveloped potentials walking onto our collegiate programs hoping to survive the required pitfalls.
3 - Trying to have a national coaching system, or trying to replicate successful programs, is in error. Training for distance running, or any other athletic event, requires SPECIFICITY. Specificity for the true actual demands of the event; specificity for the biology, history and morphology of the athlete. Coaching northern North American kids is different than coaching Southern Californians, or Kenyans or New Mexicans. Even for the same difference. Ask how your kids can be better than the Kenyans... not how they can be like them.
4 - Then it follows, that trying to coach my kids like the Kenyans train is in error. They are not Kenyans. They do not live in Kenya. But they do race 5,000-meters. Understanding why Kenyans are good, though, will be insightful.
5 - Coaching is the basis for having great runners, at least in our country with the lack of recognizable heroes in our sport. It, coaching, should be a strength, but the majority of "good" coaches are employed by colleges with college agendas. I sincerely applaud Wetmore for his world vision at the expense of the college scene. We, as a nation, would be much better served by pooling our emerging junior elites, and others, into one program with a focus on world championship competition. Hmmm, kinda what Webb is doing and why not?
6 - Finally, can coaching be better in the US? Definitely. But we should do something about it.
IMNSHO
Simmons