Morality of Using NX

Non-profits still make money: there's a need to pay for expenses and labor. There's just no net profit for the company itself.

Well of course. Even those guys (or volunteers) don't expect to operate for free: TANSTAAFL. Non-profit orgs are not suppose to seek any profit (technically defined as positive net income in economics, or where revenue is greater than expense; they can still have revenue) or else they lose grants from the government and stuff. Usually they just kindly ask for donations to cover the rest of the cost, and dump any profit somewhere, whether it's expanding their organization or donating it elsewhere.

Nexon is obviously out for much more though.