That's how Doom became the biggest game in its day by far. So few people paid for it. Almost no one! (Yes, I'm being sarcastic.)
Or take ZZT. People were still ordering copies 25 years later. Literally. Epic was already huge by then, it didn't even matter anymore.
If anything, you know what people don't do? They don't use the Donate button on web games. That's what doesn't work. You're welcome.