Collective Good (Artificially Scarce goods) Excludable but non-rival in consumption It is not really scarce: use by one person does not reduce its availability to others But it can be excludable: people who do not pay can be prevented from using itCollective Good: (Artificially Scarce Goods) ◼ Excludable but non-rival in consumption – It is not really scarce: use by one person does not reduce its availability to others – But it can be excludable: people who do not pay can be prevented from using it