Interesting to see this thread and that it's two years old. This has been pissing me off too. And yes, I've actually cut down dramatically on my purchases of beers that come in four packs, but not really to spite the companies, just because I don't feel like wasting the cash honestly. Let's take pumpkin beer, and I LOVE pumpkin beer, in years past I used to buy cases of Weyerbacher, Dogfish, etc. This year so far I've only bought one Weyerbacher 4 pack and one Riverhorse 4 pack. In my area (NY/NJ) I get charged $12 when buying ONE 4-pack. That's $3 for a 12oz. Sorry but that's just too much, and yes I know pumpkin beer costs more money to make and has a bit more time involvement. So, I instead just keep ordering my cases of Franziskaner at about $2 a 16.9oz bottle and am brewing up my Pumpkin ale this Saturday.
Another trend I've been seeing is the switch to 33cl (11.2oz) bottles from 12oz. I'm not talking European beers which is to be expected, but American companies switching from 12oz to 11.2oz and keeping the same price. Thank God I homebrew.
Rev.