At the 80-90's all was returnable glass (In Europe at least).
You bought the drinks, which were distributed in glass bottles (with stickers of the brand and everything. Like the actual plastic bottles), latter you returned the glass bottles to the store and they gave you money for it.
One day started to be promoted Tetra Brik, whose interior is made of plastic. This coincided with a proliferation of large supermarkets, that burst in selling products cheaper than local neighborhood stores (the place were was returned the glass bottles). It was marketed at TV as super ecologic, better than the glass, and that it could be thrown in the bin.
Plastic bottles for drinks were introduced immediately afterwards.
The local neighborhood stores didn't survived the large supermarkets dumping, but at that time the plastic bottles was already introduced.
EDIT: I have no clear when was introduced the aluminum cans, whose interior is plastic also.