“So billion dollar industry will have to change and modify all of its batteries at a cost of billions and billions of dollars because a parent carelessly left a button battery out for her child to swallow.”
No. The items that use these batteries may require modification.
Modification? Do you mean that we should all return to the 1970s where C and D cell batteries were the norm?
No thanks.
More than likely they require a screw to keep the battery compartment closed