I do use drugs. I have never seen spirits in a plastic bottle, even own brand super market vodka.
Boxed wine exists, and is a bit under half the market (by volume). Wine in glasses is still the majority of sales. Beer/cider/larger is sold in cans or bottles, with cans being about 2/3rd by volume.
I do drugs as well, but I don't typically drink alcohol. Maybe I am not qualified to speak on this, but in the US most of the cheap vodkas have been coming in plastic bottles for around 15 years now at least.
Boxed wine exists, and is a bit under half the market (by volume). Wine in glasses is still the majority of sales. Beer/cider/larger is sold in cans or bottles, with cans being about 2/3rd by volume.