I prefer glass bottles to plastic ones and I always buy soda in glass bottles if they are available(and this means almost always since they are available in the supermarket close to my home).
I don't actually expect consumer preference is or ever has been a primary factor. It's cheaper and more reliable to ship plastic bottles. Manufacturers will use them for those reasons and then we'll buy them because it's what is available. Or it's cheaper. Or we have a preference. But at that point, it hardly matters.