Any ingame adds equals no buy here. Games are expensive and profitable enough as they are.
Because it really matters if a coke machine says 'Coca Cola' instead of 'SoftoDrink(orw/e)', or if a bilboard has an axe ad instead of something completely made up.

Either way, Games aren't profitable at all unless they sell well (and many don't). That's old news, been true since the 90's.