This is because idle BPS also provides bonus to production when the game is closed and it will be active most of the time. Furthermore, idle BPS multiplies the bonus from the unspent Gene Strands, which means that the upgrade can be worth the cost even if the price of the upgrade is very high.

<h4>Example: A.I. controlled production vs. Gene Strand bonus</h4>

A.I controlled production is an upgrade that costs {{gs}}2500 and increases the player's [[BPS#Idle BPS|idle BPS]] bonus by 100%.