If I buy a guitar, and use it to play for fun, it is a consumer good. If I buy a guitar, and use it to play at a concert as a living, it is a capital good. Is that capital good an investment?
I would say yes, because that purchase is making me more capital. And from my understanding, capital is not restricted to just money?
Strictly speaking, all capital goods are investments, in that they all ultimately help produce consumers’ goods. In this case, a guitar being played for a living at concerts is indeed a capital good, helping produce concert music, which is immediately consumed for enjoyment by all attendees at the concert. It could also simultaneously be a consumer’s good for the guitarist himself if he enjoys playing it.