Are you sure there is a far far smaller market? More kids than ever have devices. Not just phones or consoles, tons and tons of kids are provided chromebooks or windows laptops that they have 24/7 access to. I've blocked hundreds of sites that make it through the filter, with many sites explicitly designed to bypass school filtering. There are even widespread game trends like agar or slither games, with dozens of iterations. We grew up and have other options, but kids are playing these for hours a day.