If I were ucla.edu I wouldn't be too worried about it since ucla.xxx isn't a threat to me. On the other hand if I were the owner of hotmangoatporn.com then I'd

If I were ucla.edu I wouldn't be too worried about it since ucla.xxx isn't a threat to me. On the other hand if I were the owner of hotmangoatporn.com then I'd be annoyed, since hotmangoatporn.xxx is a threat to me, and I'm now obliged to go and buy it because people could quite reasonably get my existing site confused with whatever shows up on the .xxx version.