Is It Protection OR Insecurities?

[sensei8]

Whenever a school of the MA denies access to their school and/or students...

Is it because they're protective of their students? Or is it because that they're insecure that they might lose some students for whatever reason(s)?

It can't be because styles aren't similar, that's why training EXCHANGES are sought after because not every style of the MA is all-that-and-a-bag-of-chips; something must be found other than the usual norm; limits are recognized.

I/Hombu deny excess only if I/we feel that what other styles of the MA have to offer is grossly insignificant in added depth to Shindokan. In that, we've opened our doors more than we've closed them.

[Zaine]

I would argue that it highly depends on which school we are talking about.

Personally I think schools should be open about most things. I think it is reasonable to exclude certain things that are reserved for higher level students because they've earned that level of secrecy through their commitment to the school.

However, whereas how the training is conducted and general rules are concerned there should be absolute transparency.

As to your question, I think that it mostly is insecurity with the label of protection.

[bushido_man96]

Insecurity, fueled by ego, I think.