The concept

The card network is the rail the transaction travels on. It doesn't hold the money or approve the purchase: it connects the acquirer to the issuing bank, sets the rulebook both sides follow, and arbitrates what happens when the buyer disputes a charge.

For sellers, what matters most is that the chargeback rules, response deadlines, and tolerated limits are written by the card network. Blowing past those limits doesn't trigger a fine from the platform, it triggers enrollment in the network's own monitoring program.

How it shows up in practice

You operate Nutra and your account is marked for monitoring by Visa because your chargeback rate came out of normal limits. You get a notification from the platform saying you need to reduce chargebacks or lose the account. You research and find that chargeback rules, response deadlines, and tolerated limits come from the network, not the platform.

We see our customers as invited guests to a party, and we are the hosts. It is our job every day to make every important aspect of the customer experience a little bit better.

Jeff Bezos Source: Jeff Bezos's letters to Amazon shareholders.

Understanding that the network writes the rules changes your recovery strategy. You won't negotiate with the platform to flex limits, you'll work to reduce chargeback according to network regulation, because it's that regulation the platform is applying.