[shanebellone]

Edit: I was wrong :)

[Closi]

You are misunderstanding the concept of marginal unit costs if you disagree on that basis.

AAA software is wildly expensive, but each incremental copy sold is not wildly expensive.

With a tea kettle, each incremental copy still costs you metal, heating elements and plugs, so the unit margins are smaller.

[shanebellone]

Oh! That I failed to recall. You are absolutely correct.