So? You want to reduce the diversity of model of learning.

I have no idea how you derived this conclusion from what I've said.

Last week I attended the Berlin Bachata Congress. Bachata is a dance. Organizing such a context means flying world class teachers from all over the world to Berlin and paying for a location in which to held the event.

I can resonate with an example like this because I learn tango right now and yes... there are masters that could help one improve the technique BUT... I don't see how this constitutes a valid example since is mixing current model with what I was exploring. If plane tickets cost thousand of euros, if space renting is highly expensive... and if everyone involved has a high enough imperative to get a lot of money... you will get something like this expensive bachata festival. If transportation, food and lodging would be free.... masters could come only to build status. An you will not need any permission from a centralized authority. Local events authority involved might be involved for scheduling some event locations...