In the off chance this is a genuine question, this thought experiment is always resolved with "reasonable payments are only effective if many people contribute, and that is probably okay".

Consider the extremes: - No one does anything. The cause fails. No one goes broke. Many people are modestly inconvenienced. - One average citizen donates everything to a worthy cause. No one else donates. The cause fails and the donor is broke. Many people are modestly inconvenienced. - Everyone donates a small fee to a worthy cause. The cause achieves its aim. Some people do not benefit, and are modestly inconvenienced.

The choice, when given these two extremes, is clearly to decide by some consensus whether the interests of many (who would otherwise be modestly inconvenienced) outweigh the interests of the few (who would be modestly financially inconvenienced).

But it assumes the cause is truly worthy, the money is handled faithfully, and the survey method is fair and accurate.