i believe the reason that TOS can not be cured is because it is a set of symptoms, you cant cure symptoms. everything that i read convinces me that the root cause is scapular instability, the experts think this is a symptom but i know that this is the reason for
1) posture changes
2) heavy arm feeling
3) pec minor syndrome
4) shoulder pain, neck pain, thoracic spine pain
5) rib pain
6) discomfort when trying to sleep
7)headaches
and so on and so on
i am sure that if a person did not have a job which required holding their arms out in front of their body they would heal and recover back to normal .however if you are a motivated person or are working to a deadline you are most likely to continue through this stage and thats when the trouble starts. Many activities and in-activities of daily living cause the scapular instability to perpetuate. the experts see the scapular instability (it is in the article which you found frustrating) but they do nothing about it or worse still, they try and strengthen muscles which are neurologically compromised ( this was my therapy, it compromises the nerve even more so)

I bet London to a brick that within 5 years they will find that they have got it backwards. if I'm wrong then i'm a goose. Essentially everytime we use our affected arm we compromise the nerve which controls the muscle which stabilizes our shoulder, when the scapular muscles tire early the pec minor dominates and causes pec minor syndrome.
everytime we sleep we lay on the vulnerable and sensitive scapular nerve which ensures that it doesnt recover.. So they provide operations and therapy which does not address the root cause, only the symptoms and when we dont recover somehow it is all in our minds. my vent regards towelhorse