National defense provides an example of a good that is non-excludable. America's national defense establishment offers protection to everyone in the country. ... National defense also provides an example of a good that is non- rivalrous. One person's protection does not prevent another person from receiving protection.
Is national defense is a public goods?
In economics, a public good refers to a commodity or service that is made available to all members of a society. Typically, these services are administered by governments and paid for collectively through taxation. Examples of public goods include law enforcement, national defense, and the rule of law.
Is national security a non-excludable good?
National security is nonexcludable because there is no way of withholding protection from those who don't pay taxes.