The obvious ones to me are economies of scale, limited resources
The former is almost always true and the later is always true, so is your claim that all industries are natural monopolies?
I mean that healthcare is not a public good in the sense that it is both excludable and rivalrous.
The examples FiftyTwo provided -- clean water and roads -- aren't public goods either. In a sufficiently populated economy, they are rivalrous. They are usually classified as common goods, non-excludable and rivalrous.
Why are they regarded as non-excludable though? Both roads and clean water could be delivered as private goods. Toll roads demonstrate that roads can in fact be excludable. The Cochabamba water war would not have happened if clean water were non-excludable by its very nature. Non-excludability is not an intrinsic property of these goods. Pro...
In line with the results of the poll here, a thread for discussing politics. Incidentally, folks, I think downvoting the option you disagree with in a poll is generally considered poor form.
1.) Top-level comments should introduce arguments; responses should be responses to those arguments.
2.) Upvote and downvote based on whether or not you find an argument convincing in the context in which it was raised. This means if it's a good argument against the argument it is responding to, not whether or not there's a good/obvious counterargument to it; if you have a good counterargument, raise it. If it's a convincing argument, and the counterargument is also convincing, upvote both. If both arguments are unconvincing, downvote both.
3.) A single argument per comment would be ideal; as MixedNuts points out here, it's otherwise hard to distinguish between one good and one bad argument, which makes the upvoting/downvoting difficult to evaluate.
4.) In general try to avoid color politics; try to discuss political issues, rather than political parties, wherever possible.
If anybody thinks the rules should be dropped here, now that we're no longer conducting a test - I already dropped the upvoting/downvoting limits I tried, unsuccessfully, to put in - let me know. The first rule is the only one I think is strictly necessary.
Debiasing attempt: If you haven't yet read Politics is the Mindkiller, you should.