If you are a cable subscriber, you are both NBC's customer (that gives them subscription fees via your cable company) and NBC's product (eyeballs sold to advertisers). As NBC's customer, you are already receiving the Olympics.
If you are not a cable subscriber (i.e. over-the-air broadcast receiver), you are NBC's product only, and not their customer.
If you are not a cable subscriber (i.e. over-the-air broadcast receiver), you are NBC's product only, and not their customer.