The solution here (and for most things) is education. These big bike companies (and any company selling large LiPo batteries) should fund battery safety program

The solution here (and for most things) is education. These big bike companies (and any company selling large LiPo batteries) should fund battery safety programs for kids as part of the general fire safety lessons they already learn, as well as publish repair and safety guidelines for consumers. They should also offer low cost battery refurbishment and swaps.