Lawyers don't use PACER. They'll have a LexisNexis or Westlaw terminal. That gets them all of the rulings and so forth, but annotated.

PACER is more or less journalists, activists, and so forth.

The fees PACER charges doesn't reflect the cost that the government bears to make it available (it's much higher). It's a poor service, seemingly designed to discourage its own use. And the bureaucracy within the court system obligated to provide it seems to feel that it's far more than a burden but even an intrusion into matters that the courts would keep from the public, were it allowed.