sorry the late answer, got distracted yesterday... but here it is:
Piracy is rampant, Udemy isn't doing anything against it (afaik). If someone needs to pirate a course and download it for free that's offered for 9.99 and not get the Q&A, the downloads, the additional stuff, the updates and all of that, so be it. Can't change that. Also, a lot of the folks who pirate a course will never pay for it. It's a loss on paper. Still a loss though.
Here's the kicker: I'm thinking, if my courses teach someone the blockchain stuff and turn his life around to go from $3/h job to a $60/h job (happened), feel free to pirate. Actually, send me a message and I'll give you a free coupon if you really can't afford the whatever $10. I did this so many times, I'm happy to help, I do care more about other peoples success than about the little money udemy brings in.
Plagiarism is another category. If I catch you taking my content and repurposing it to sell it under your name, I will come after you as hard as I can. I am not sure if udemy does something actively against plagiarism or not, but if I find a person who is bluntly reuploading my stuff verbatim to udemy (happened) or slightly editing my courses and repurposing them to make money (happened too), I will not only send a takedown notice, I will come after you and collect damages and ruin your life as much as I can, because I consider that the absolut scum of the internet and I wish everyone who does that has rashes on intimate body parts for the rest of their lives and can't sit straight.
What is your view on Piracy, Plagiarism, and the small effort Udemy seems to do, to limit the damage done to course authors?