If the OS T & C are crap, underpaid and overworked then pilots will not apply for the jobs.
If the jobs are filled then the pilot market can stand these T & C and those who currently work on better conditions are in a priviliged position.
Straight commercial drive will eventually force everyones T & C down to a common level until another operator is brave enough to break the circle and up the stakes by offering a better set of conditions.
Pilots then migrate to the company with the better T & C.
It has been happening in industry for ever. Nothing new.
Trying to stop it happening is like standing in the middle of M25 with your hand up trying to stop the traffic.