This has got to be one of the most short-sighted/stupidest decisions content providers have ever made. It's literally free advertisement and they eschew it in the name of "piracy".
Good thing all the TV shows that don't allow screenshotting have never shown up on pirate websites /s
Streaming sites should allow for screenshots and clip export, people aren't stealing/watching shows in ~1-2 min chunks. Add a border around the clip, put your streaming service name in the bottom corner with a QR code to the show (maybe even the timestamp as well). Let people "burn in" subtitles, add effects, etc (a la TikTok, or something, I don't use TikTok). Literally can only be a positive thing for the company. Heck, spend the bandwidth to host the new clips/pictures so people just link directly to you. Put all those GIF sites out of business overnight almost overnight.
TV/Movies are largely ephemeral experiences. For the handful of content I actually care about, I can purchase it.
To share with friends, to make memes, to record notable scenes/moments in media you like. There are many reasons to want to screenshot streaming media