I do think therapy dynamics have a strong basis in biochemistry "hacks" or "loopholes."

What I think creates that is too much thinking and talking and too little action. Therapy is meant to delay action for people who are too REactive to allow insight into actions. But there is also a natural human desire for action and to act on feelings so this can get compounded by that environment in which action is strictly prohibited.

If the understanding and insight doesn't get solidified, then what is at risk of happening instead is that the DESIRE/IMPULSE compounds on top of itself until a therapist is essentially selling a drug.

Oh yeah, also, it is known that occasional/scarce/unpredictable rewards create behaviors which are the most addictive and hardest to extinguish. So when there is sometimes a minute action taken, a hug, a gesture, something that is different than usual, that can become that "scarce" reward.