I think the difference in successful donation-based monetization systems is that supporters are subscribing to a person that they support (Twitch, Patreon, Onlyfans) and getting perks and extra content in return. In contrast, tipping random people you don’t have a regular relationship for a specific post is not a big industry anywhere. And it doesn’t encourage a profitable, stable relationship between the people paying and the people working. It doesn’t monetize content well or create people who know how to make profitable content. “Oh hey this post let me buy a coffee” is not a stable business model.