prŏp″ə-găn′də
noun
1. The systematic propagation of a doctrine or cause or of information reflecting the views and interests of those advocating such a doctrine or cause.
You are technically correct—the best kind of correct.
I think the big distinction here is that external marketing is trying to change public opinion in pursuit of profit to the detriment of competitors (presumably).
Internal marketing as discussed in the OP is trying to change employee opinion in pursuit of profit to the detriment of the employee.
