Who Cares? (demographically speaking)

Sometimes i eat supper at a restaurant near my house, which is frequented about equally by locals and tourists. Around seven a kid usually comes in and plays flute and sings. He´s probably between 8 and 10. He starts with a preamble (good evening, enjoy your meal, i´m just gonna play you a bit of music, if you like it help me out with some change), which he´s obviously recited verbatim many times, which he delivers quickly and all in one breath. He usually plays the same three songs, while pacing around the restaurant. He plays and sings pretty well but never sounds like he´s really into it. He finishes with another very short speech more or less like the introductory one and then makes the rounds of the restaurant asking for change as unobtrusively as possible.
I like to pay attention to social demographics, so here they are: people who appear to be from here almost always give him change. His chances with them are probably 90 or 95%. Tourists, who probably have a much larger income, are a lot less likely to give him anything. I´d say he´s got about a 65% chance with them.
Also, anytime i see someone come into a restaurant and ask for food, the people working there will give them something.
Maybe foreigners feel like poverty here isn´t their problem because these people don´t belong to the same (artificially constructed) "nation" as them. Maybe they´re still operating on the first world belief that people asking for change are just lazy, despite the fact that here they´re mostly children, single mothers, or elderly, which (i think?) is not the same as lazy.
Maybe Bolivian culture is a little less individualistic, maybe there´s still a bit more of a sense of social solidarity here.
It's interesting, anyway. I´ve tried to imagine what would happen if this kid were to show up and play in a Canadian restaurant. Probably there´d be a franchise policy or something to justify kicking him out.

Similar situation: there´s a bunch of kids in Sucre right now who basically travel and juggle and sell handmade jewelry for a living. If i happen to be wearing my black hoodie and look low key enough they´ll treat me as an equal, but if i look any nicer i become a potential customer.
They´ll juggle in intersections during the red lights, and surprisingly, about half the cars that pass them when the light changes will give them some change. Compared to montreal´s squeegee punks, these kids are doing really, really well. And the situation is almost exactly the same, in terms of the quality of life and degree of relative poverty of everyone involved.

Anyway.. i guess what we in north america see as a socially acceptable level of generosity is a lot more arbitrary (and, well, stingy) than we might think.