This is a lovely Jimmy Stewart / Frank Capra-esque sentiment...
But let's get real. The amount of people here, and the amount of non-Nike runners in the USA who are with elite programs...well...er...they are already not buying Nike.
Nike's growth rate is such, and the Nike Free's BOFFO BLOCKBUSTER success with Yoga chicks and Yoga jogging soccer mom's alone...would cover by 10,00% and boycott grass roots effort.
The best case scenario -- would before everyone to play nice-nice, mea culpa, mea culpa, and get Boris a little Better Bike deal, and create some detente and peace so everyone wins, Boris can train where he wants, and he can run for the USA if he makes the team...wherein he's going to wear Nike anyway...
If it gets nasty, there is the potential for Boris to sue his agent, and there is the potential for Nike to seek the decertification of his agent.
How often do these cases come to light? About never, ergo, the reason may be that they are pretty standard and straight forward affairs where things usually go smooth, smooth, smoothly.
For whatever reason, women are in love with Nike Free's and other Nike women's running shoes these days, you can't go anywhere on the west coast without seeing 90% of fashionable women wearing Nike and Nike only.
Even if Nike never existed, the next large corporation would provide the convenient 9000lb gorilla for the villagers to attack as the Frankenstein.
Hopefully, in the end, something sane will be worked out -- as the goal should be what is best for the USA Team, and not what is best for NB, Nike or anyone else.