The assumption seems to be that the 80 hours will be over 8 x 10 episode seasons and it does seem that most TV shows now have short 10-13 episode seasons. Just out of curiosity, whatever happened to 20+ episode seasons for TV shows? With increasing costs per episode, are studios just reluctant to take the financial risk to commit to long seasons? Are actors, particularly big name actors that prestige shows try to get, reluctant to commit the filming time needed for long seasons? Have writers determined that 10-13 episodes is the optimal length to tell a story arc? Is it something else?