When I started in the industry in the 1990's, pay was low but there were opening jobs in radio, even in my own metro.
One issue that hasn't been breached much here is that radio revenues are probably down from where they were 30 years ago, and are definitely down from where they were even 15 years ago. When radio revenues are down (and they have been dropping apparently even before Corona hit), that doesn't leave a ton of money to hire new people, even if they are promising or talented.
I started with an unpaid internship, which was fine with me, as that was the way to go, and it didn't hurt me financially at the time -- but I can only imagine that the PD's or GM's in charge of hiring or choosing people have more limited budgets to work with than they did in 1990 or 1995.