How is the principle different?
You paid for the product. You used the product. You didn't dislike the product so much that you didn't finish it. Seems pretty analogous to me.
Things being different doesn't automatically make them incomparable, this is literally how all analogies work.
If the game itself was enjoyable enough that you kept playing it, that doesn't reach the threshold of "so bad you feel you should get your money back on principle" imo. Would you really expect your money back from a movie just because you didn't like the ending? That's wild to me.
Not to the point of deserving a refund, totally disagree. At what point do you draw a line? Should someone who hated the Game of Thrones ending get a refund for the years of subscription they paid to watch the rest of the show?
I don't think not liking a piece of media you bought as much as you thought you would deserves a refund when you've already consumed all or nearly all of the media. You've received a service and used a product at that point, you should pay for it.