Berman and Braga were hopelessly depressed by the lack of success on Enterprise.
They turned off their brains in season three, letting the little people go mad with power, then they were on holiday for season 4 when they handed everything over to Manny Coto.
This is why paramount stopped making Star Trek to wait out Berman's contract, because they couldn't extract him from Star trek if he had on ongoing or in development projects.
And now what do we have? A new movie every 5 or 6 years?
Berman was making shit, but at least he was making a lot of it.