Well, indeed - that's part of why I don't think the situation can be sensibly changed merely by encouraging individuals to stop; people play defect because playing defect is effective, and when everyone around you plays defect there isn't really a lot of point in playing cooperate.

After the funny-bikes day (which you may have seen the photos of) I think I'd more like one of those huge tadpole cargo trikes than a trishaw. The cargo trike is only good for one person (maybe two little ones, it's rated to 150kg maximum) but I don't often want to haul lots of people around, and it looks a lot more use for cargo.