All I have to say is  

No concept what you are talking about.  
When airlines furlough lots of high time guys take flying jobs flying light aircraft.  If you try to go to another airline job while on furlough you lose your seniority so guys take whatever flying jobs they can get.  I did flight instruction at a college until finally going back to helicopters.  Last furloughs were during COVID, so if you think it won't happen because of pilot shortages in reality you are a merger or stock market crash from a furlough and possibly flying a Cessna 150.  

A PC-12 is not a short timer gig really.  It's a 135 gig.  Plenty of airline pilots have gone from 121 to 135 typically for quality of life.  Guys who work 135 often aspire to fly corporate so they establish themselves in the 135 world.  Corporate flight departments prefer 135 experience over 121. 

If you believe S-76 is as far as you can go, maybe you have sold yourself short.