How do we keep musicians in orchestras?

Sometimes it seems like there is an abundance of orchestra personnel leaving the orchestra, with a whole host of reasons. We may not always know or agree on why a person leaves, but it leaves a big hole in the orchestra that with audition and trial procedures at best taking months and not unusually taking one or even two years we have to wonder is there a way to keep musicians in the job.
We are in denial if we believe that the reason given is always the entire picture. A horn player may want to go and study law - but could that horn player as an orchestra member have felt more included in the orchestra’s decision making - artistic or administrative. Were they subject to judgements from those around them (section leader, conductor, colleagues, management) that affected their daily work environment? Of course they did not want to kick up a fuss - they would get nowhere anyway - but there was a deep unhappiness with either the atmosphere, the repertoire, the lack of control which they simply could not stand any more. A genuine coming together of all parties on a regular basis will surely promote understanding, and use the talents, expertise and knowledge of those who have much to offer through their individual and collective experience. Surely this is how we build (though I am sure it is not easy and takes time and investment of energy) a positive orchestra environment where players want to stay.