In fact, you see the same problem in movies where you either have big tentpole blockbusters or smaller low-budget movies ( like Blumhouse or A24 releases) or indies. There aren't many mid-budget (I guess that's around 50-75 million USD ??) movies made any more.

Yes, you do have breakout hits in that space once in a while, but not enough for studios to risk them without big name stars. Or more commonly actors who fund their own productions.

In both industries the case can be made that the market has made the choice and whiners should STFU. But then we should also make peace with what's lost in return.