It's all so vague. "lack of investment in their skill".

You just spent $250k and 5 years in college learning stuff.

You get hired to do a job for money.

What "investment" do you expect company to do?

Give me number of weeks and amount of dollars per year and tell me how it stacks against $250k and 5 years that you just spent?

If you want to learn on the job, shouldn't YOU be paying the company for teaching you, like you pay college to teach you?