Do you have to own an app to be considered an Ad Network? It seems like ad networks are middle men who advertise in Source Apps for Advertised Apps. If so, do I need to own an app to register as an Ad Network?
What is an Ad Network
Doesn't appear you need to have an app just to register:
https://developer.apple.com/documentation/storekit/skadnetwork/registering_an_ad_network
https://developer.apple.com/documentation/storekit/skadnetwork/registering_an_ad_network