Yup. All it takes is one maniac to alter a whole industry. Think about how the Unabomber forever changed how the USPS processes mail, or how Richard Reid has made shoe-removal a regular part of airplane travel.
I remember it didn't take long at all for tamper-resistant packaging to hit the shelves. Only a matter of a couple of weeks, IIRC. People were really scared of any product that could be tampered with and the industry responded immediately.