It didn't: Uniqlo and Decathlon, to name a few, use exactly this concept at their self checkouts. However, because RFID chips are too weak to be reliably read

It didn't: Uniqlo and Decathlon, to name a few, use exactly this concept at their self checkouts. However, because RFID chips are too weak to be reliably read in bulk and at a distance, you need to deposit your items one by one in a special trough that scans them. And this is only possible because both Uniqlo and Decathlon are 100% house brand and can thus ensure the chips are present in everything, which is why random corner stores or supermarkets can't copy them.