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In this billing example, the cost would decrease from 67K per quarter.

Note:  You can also refer to Amazon S3 Cost to know more information.

However, this optimization is offered as a topic 's level optional configuration rather than the default behavior based on followed scenarios:
(1)  some Some users/topics rely on remote storage for real-time analytics and need the latest data to be available as soon as possible  (In fact, it only tries to stay as up-to-date as possible,
      but it still can’t include the latest data because the active segment hasn’t been uploaded yet.).
(2)   user want 
However, Therefore, this optimization is offered as a topic's optional configuration rather than the default behavior.Some topics may set a very high ratio for remote-to-local retention time. The cost savings amount will be small, so it is mainly to avoid waste. Users may think it is not worth enabling the feature for the topics
(3) 

Public Interfaces

This KIP introduces one new topic configuration item:  remote.log.keep.latest 
BTW:  topic's remote storage already had some others items such as remote.log.delete.on.disable/remote.log.copy.disable, etc.

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