No, I think your assessment is correct. Few residential buildings in Taipei are that tall (my current one, for instance, has 6 floors) but the households that p

No, I think your assessment is correct. Few residential buildings in Taipei are that tall (my current one, for instance, has 6 floors) but the households that personally deliver their trash to the trucks tend to be individual units (not part of a apartment complex or gated community) in older and more residential parts of the city in buildings with fewer (e.g. 3) floors. But the bigger factor is that people who have the money to live in newer apartments would prefer to pay for managed trash.