I don't know where pay toilets even exist, or if they're public or private. Wouldn't the alternatives be the absence of a given toilet or a tax-funded toilet? I

I don't know where pay toilets even exist, or if they're public or private. Wouldn't the alternatives be the absence of a given toilet or a tax-funded toilet? If the latter, the poor could pay disproportionately due to various tax dodging avenues available only to the rich.