Sex ed via profit-seeking corporations is going to be pretty different, and arguably much more unnatural, than sex ed via parents and other people who care about you.
It's true, it just used to be behind the scenes available to those who seek it out. Like that skeezy room at the back of the video store that had curtains blocking it off.
IMO the real "problem" here isn't technological, political, or corporate - it's just a slide of social norms toward hyper-permissibility of immodest or bad behavior. The resolution will likely be social as well, and people realizing that kids are getting exposed to smut will likely hasten that. Laws might get passed, corporations might change their policies, but only after the pendulum swings back socially.