Yep, that's what I meant. In the nWo's case, they are more valuable to Vince as a whole than the sum of their parts. No promotion could really do a rip off nWo without Nash and Hall at the very least. Plus, you can make a lot of money selling black t-shirts with three letters on them for 30 bucks apiece. Enough to keep a fledgling going long enough to get a TV deal. Even though a rival would have to use 3 different letters since nWo now belongs to Vince, he can't copyright black and white, or powerbombing people through announce tables.
Might as well just let him keep it on. They've gotten as much as they'll ever get out of him, and he's pretty much risen as high as he'll ever get. Unmasking him isn't going to make him this super huge draw and/or make him a top guy in the fed.