Earlier quoted context omitted.
Per user it is probably a few pennies per month if they are smart about it. Which is basically nothing as a percent of a single unit sale (subscribing user) compared to the marginal cost of selling cars
Since they need infinite storage even for non-paying users in case they pay for full historical search (though this can be on Glacier or some other type of archival storage), it's probably more than a few pennies, but your point is still entirely valid.
That's before compression.