AI doesn't make that very easy if you're just two people staring at an agent, but I think a lot of people who aren't already senior are going to hit a wall they can't climb when their experience limits what they are capable of doing with AI.
As with many things, usually the bad experiences with collaborative methods come from a specific implementation and those experiences become the bias.
But, it’s not 2x. Companies are cheap, they don’t want to pay for it.