I don't think anyone in this thread argued that it was their duty to do anything. Everything we've talked about employers doing in this thread has been optional for the the employer. So you haven't said anything that anyone appears to disagree with.

But I wouldn't say it was regulating. Can you see a difference between being allowed to eat and drink whatever you want, and requiring that your employer provide whatever you want to eat and drink?

If your local shop doesn't happen to sell your favourite drink they aren't regulating you are they? That's just not what that word means.