Well, thanks for the response even though the analogy was too much for my small brain to fully appreciate
I think you mostly just confirmed what I already suspected though.
Allow me to modify your analogy and correct me if I don't get it right:
IICE Air puts $1000 in your brokerage account each day instead of the $850 your ECU was depositing.
The sprockets allow you to buy a little lower and sell a little higher with whatever money is in your account.