It seems that the artists who fail at OA/OS are those who are already big and popular so holding their singles off for 2 weeks to get some airplay for the passive listener would be good for their chart performance. But it seems girl and boy bands do poorly with OA/OS because their music is throw away and so they rely on a big build-up to release!

To enforce OA/OS, the OCC just needs to implement the following rule: a release is only chart-eligible if it has been available to purchase since its release to radio stations.

 

That would only punish pre-album songs, though.

 

The point is that pent-up releases, which are a way of manipulating the chart to ensure high first week sales and a high peak position, are only possible for pre-album singles. Later singles are equivalent to OA/OS because they are already available to cherry-pick from an album when radio and TV promotion starts in earnest. Introducing the rule I suggest above would remove the incentive from record companies to hold back the release, because they would no longer win the prize of an (artificially) high peak position.