Thing is, you'll talk to people about the shows and movies you liked. You'll recommend them. You'll discuss them online. Maybe just upvote a post talking about them, make it more visible.

And someone who doesn't pirate will see that, and pay to watch it. (And, in turn, also promote it like you did.)

If the product is good enough (and if people are pirating it it probably is), piracy is free publicity.

And if it's not good enough, people won't be pirating it anyway.

So, given that you wouldn't have paid for it anyway, it works out that piracy provides a net benefit for the producers... and for society as a whole, since it incentivises them to make their products good enough to attract pirates, thus raising the average quality of entertainment.

EDIT: also, for the same reason they should be giving their product for free to reaction channels and even paying them (like game companies — Nintendon't excluded — already do with YouTube reviewers), since it's cheaper and more effective than normal advertising.