Chart showing US IMDb >=8 series premieres from 2014-2021. These are the most important shows.
65 such shows premiered from 14-17 and only 31 from 18-21 (-52%). What are the 34 daring shows that didn't get made?
Here's the big chart, then specific networks:
HBO actually showed no falloff between the first and second four year periods -- 6 shows in each period.
Amazon had a 33% decline from 6 to 4.
Netflix, however, had a dramatic 70% decline from 20 to 6. Dramatic change.
Older shows deliver seasons for a while and can make up for a weak development season. But great new shows are essential for future success.