"Lush" is a well known brand. If people go to www.youtube.com/lush they would expect to see Lush cosmetics, not some random guy. Similar for www.youtube.com/mcdonalds.
Uh, who are these "people"? I've heard of McDonald's, but I've never heard of Lush cosmetics. If I went to www.youtube.com/lush, I don't know what I'd expect to see. Certainly not a cosmetics company. Porn maybe?