What also doesn't help is that the game steers you on the main quest every turn it gets, making you not go onto side jobs as naturally either.
Exactly, a vicious circle.
Following the main story gives you a "death + J's betrayal" Arasaka ending, which seems to punish you for not exploring the open world.
Exploring the open world when you have to think about survival doesn't sound like a good idea either.
And the cherry on the cake is that you still have to go through the main storyline even if you decide to choose a non-Arasaka ending. I thought I was set up to go and capture Mikoshi after the VooDoo Boys -- nah, Johnny said we can do that right after we left Clouds looking for Evelyn.