more or less costly. But that cost depends on the existing technologies of collection. When it becomes technologically cost effective to collect for the provision of a good, private parties will find it worth their while to provide the good. Calling such goods "public goods" misses the

DOI link for more or less costly. But that cost depends on the existing technologies of collection. When it becomes technologically cost effective to collect for the provision of a good, private parties will find it worth their while to provide the good. Calling such goods "public goods" misses the

more or less costly. But that cost depends on the existing technologies of collection. When it becomes technologically cost effective to collect for the provision of a good, private parties will find it worth their while to provide the good. Calling such goods "public goods" misses the