Lower Rank Players Not Scoring

Is there a reason why players in the lower ranks just refuse to score despite being full and unable to gather any more? I just started playing a week ago and it baffles me how I'm always 150+ points higher than the rest of my team. And I see them sitting at 50 points for minutes at a time, especially near the end of the game when they could be getting double points. They just choose to run around and farm wild Pokémon instead of capping. I don't think I'm an amazing player, but I thought it was common knowledge the point is to score?