It seems that 90% of the "starter" jet jobs these days are going to guys fresh out of flying school. I don't know a single FR or EZ F/O now who joined from a background of instructing, aerial work, or bashing around Yurrup in a turboprop... and I can only think of one F/O in Jet2 who joined from that background in the last 2 years (and I do know quite a few in all of those companies).
It's possible that's because you never worked outside of your country.
Many airlines have a total time restriction, and even some countries like the US have a civil authority restriction concerning total time. In Canada 99% of the jet airliners newly hired F/O come from a multi piston/ turboprop background, could go on...
bashing around Yurrup in a turboprop
yes that's for sure not for everybody...
