Well... there is competition in the USA, and the Russian ice dance will come back at some point. I believe Barbara is a tad short-sighted here, which is completely understandable because she has a team in the mix.
What IAM will be doing and this is from my crystal ball, and it's been right before but also wrong too

so whatever
Many of the skaters coming from other countries, for instance Asia or smaller European nations without a very strong ice dance tradition, may go back to their homeland after they retire and coach with their knowledge... This is exactly what has happened with Marie-France and Patrice. There wasn't such a strong ice dance tradition in Montreal. They went and trained in Lyon. They took all they learned there and brought it back and adapted it. Then, some of their skaters from the first generations (Hubbell, Diaz, Moir) opened up a branch in London. Sure, this branch is associated with IAM. They could open up another branch somewhere else, or other skaters could get their own school set up in their own hub.
Actually my crystal ball is not pure magic. It's just a reflection of the history of the sport. Ice dance was pretty much Russian and French for the longest time. When the Soviet Union opened up, a bunch of coaches came to Canada/USA.
Davis and White as well as Virtue and Moir trained with Zoueva. Detroit was the hub back then. Now, Belbin and White have their own school, and Scott his. Right now, Guillaume is still in Montreal but he could definitely start his school in France... etc etc...
Some skaters will want to teach. Others have other interests. For instance, Tessa or the Shibs. In any case, If one removes the concept of winning.. but focuses on the development of the sport in general, IAM has contributed to raise the level of ice dance in MANY parts of the world.
If Babs doesn't see this, well, it's because she is looking at her own skaters only. Unfortunately, a narrow perspective isn't going to help her students. Now, that's not the crystal ball speaking, but just my opinion.