When I talk to fellow parents, it's surprising how many say in the same breath that they won't let their kids play anything with IAP, yet also that they only download free apps for those children. This contradiction is putting pressure on developers trying to a.) make great apps and b.) stay in business.
Perhaps the media reports of kids overspending on IAP will change things, persuading more parents to pay for high-quality apps, or spend more time figuring out which apps use IAP in an ethical way.