I think the toilet business is only a good one on a large scale anyway: mostly due to fixed costs for paying the cleaning staff no matter if you operate a restroom with 1 or 20 seats.
BTW: I'm not sure about the neighbor. As I would only ask for a voluntary 50 Ct. there's no reason to prefer the other guys toilet. I assume my toilet would be preferred because it's cleaner (cause I'd pay more to my cleaning staff).
cleaning staff never gets a lot of money and if you need 50 ct to use your toilet it will probably not be the preferred one because people who pay direct money mostly think they can do whatever they want (they paid for it) so every use is more problematic than somebody who can use the toilet for free (exceptions confirm the rule).
Except the neighbour has higher costs having to deal with cleaning the toilets that's not being offset by increased profits. TINSTAAFL or TINSTAAFT in this case.
