Expect to spend some time as an intern (unpaid) before getting anywhere. If you're speaking about recording engineering, you'll need to move to LA NAshville or New York, in order to get a "real" career. If you mean live sound mixing, there are Clair bros, in Littitiz, and Nashville, and Showco, in Texasa. There are others, but those two do the lions share of work.
If you mean product development, those are just starting points.
The short answer is "yes" it is a hard business to break into.
< Been doing sound since 1972, Recording since 1974. Been around the world a few times, Have mic, will travel.