a person who is sick is just a person who is sick. They don't become a consumer until they consume something and for that you need someone to produce something to consume. A consumer is defined by consumption. Consumption is only possible if there is something to consume. They is only something to consume if that something is produced/created. That means that someone cannot be a consumer without the people who create whatever it is they consume.
This is pretty simple semantics. Not sure what you're struggling to understand here.
This is pretty simple semantics. Not sure what you're struggling to understand here.