A majority of users will be downloading content which isn't brand new and has been seen before though. Home users are rarely targeted with brand new attacks... you'll have a few victims and then the attack/s will be too exposed to continue being effective against services from resourceful vendors (most of the time).
That being said, home users are not usually included in targeted attacks either. Such is almost always reserved for business customers, usually for the intention of credential theft/sensitive data ex-filtration as the main goal.
These "Proof-Of-Concept" videos are pretty much useless in the real-world because it does not represent a real-world scenario - we cannot even validate whether the "Proof-Of-Concept ransomware" is actually behaving like real ransomware in this specific test.
