The NBL is very wise. They're an English-speaking country, so they have an advantage here because, though I would have been adventurous enough at 18 to go to another country with a different official language to play basketball, I get why most people would absolutely not feel that way.
Australia and New Zealand have McDonald's, Burger King (well, Macca's and Hungry Jack's, but whatever, same thing), and probably don't feel so different from the United States that it's too alienating. It's also wise for them to not count potential college players against their international player counts. If they can peel off one or two top-twenty players a year eventually, that'll be big for their league.
ESPN needs to get the rights to the NBL and put it on ESPN+ because I'd absolutely watch this.