I believe water for example was almost exclusively sold in glass bottles, and soft drinks were often sold in either glass or refillable PET. While all of these

I believe water for example was almost exclusively sold in glass bottles, and soft drinks were often sold in either glass or refillable PET. While all of these still exist, the single use bottles became much more common for these use cases. The only exception I can think of is beer and maybe some premium juices.