Interesting read - I'm just not convinced that Blizz see a profit potential in legacy servers.
They'll look at the numbers from Nost, and the amount of staff time they'd need to sink into organisational change, launch, and then maintaining, and shrug and say it's not worth it.
If that's the case then it would be nice for them to just quietly ignore the private servers that are doing this...
Incidentally, a cease and desist letter isn't just fired off without senior sign-off surely?