Berman has been around Trek since the TNG days, serving in the executive producer role on DS9, and taking over Voyager and Enterprise completely.
Since he was involved with two sucessful projects about Trek, he was expected to keep it up.
As I recall, he used to make excuses about Voyager's rotten ratings, claiming the system was flawed that did ratings, and saying that TNG and DS9 were syndicated, so theyt had a different system.
The truth is, since UPN took over the future of Trek, it has been all downhill.