Collective hedonism is an abstract ideal that has not quite had any real world application. I have met quite a few hedonistic individuals but have yet to see a successfully and consistently hedonistic group. It's hard to get a large group to agree on what is meaningfully pleasurable. For the purposes of this discussion it's too abstract to be relevant and even if it was I'm still not quite sure why it would be 'badass' as doing the pleasurable thing often does not coincide with doing the right thing.
Collective pleasure does not exist with any degree of permanence but collective prevention of harm absolutely does, and often requires sacrifice / hardship, which is what I would define as "badass"
I think the problem is that the antitrust ship has already sailed.
I don't think a government run grocery store would be looking to compete on the open market. It would be more along the lines of subsidized food for lower income households on food stamps, practically speaking. That is much more sutainable than one that's open to the general public.
If a government run grocery store could provide a fair price for items we are currently being gouged on, I doubt they would be able to keep up with consumer demand. Essentially middle class and above will have to keep putting up with commercial prices.