In Dutch movie theaters you used to have a somewhat similar offer as the pinata on GOG. Every week on Wednesday after 22:00 there was a movie showing.That movie was not officially out yet. You paid half price for admittance, but they wouldn't tell you anything about the movie you were about to see.
That showing time was also not randomly chosen. Wednesday evenings are usually occupied by (international) soccer matches, so "soccer widows" and people without any interest for soccer would go. Usually that is middle class people. Loved the concept, enjoyed many movies that way. In all those years, I only walked out of one movie before it finished. If you must know:
The Talented Mr. Ripley
If I had a credit card, I would not mind playing the pinata at GOG. 3 USD for a bit of 'prentertainment' shouldn't be breaking the bank. And if you don't like it, there is always the option to gift it to friends/family (who would be entertained by these). Heck, you might even be pleasantly surprised with what you get.
Fully realizing that games are not like movies (in how you "consume" them), I think that the concept behind the pinata concept works for both forms of entertainment. Still, I might be weird that way.