At least here in Chile, when somebody calls you 'menso' it is understood that you are being called dumb. But it's connotation isn't too negative, it's rather familiar and cutesy, probably because we got it from El Chavo del ocho :)
Disclaimer: engineering undergrad here, half-learnt book knowledge lies ahead.
All of this discussion boils down to how you define the word 'enterprise'. A definition I was taught, of the concept of 'empresa' (meaning, literally in Spanish, 'enterprise'), is
socio-economical unit in which capital, work and direction are coordinated to achieve production that responds to the requirements of the human medium in which it acts,
which is indeed a broad definition, and one that accepts Microsoft, Apple, the Wikimedia Foundation and your local soup kitchen as enterprises, even if not all are for-profit organizations.
Now, sustainability is desirable trait all such organizations, but it is not required, obviously ;)
You say that making a definition as general as that to be useless, but I disagree. When someone tells you that he is an entrepreneur, and nothing else, all you know is that he runs an organization that does _something_ for _someone_. You don't know anything about his profits, whether he seeks them or not, and that is something that, for an outsider, doesn't matter. The definition of 'entrepreneur', profit seeking or not, does not help you to know about the finances of the organization, and thus the generality isn't harmful to it.
