A significant proportion of the overall HN readership has access to these perks. It's not unreasonable to discuss them in the context of the pros/cons of working from home.
I'm not aware of a single company in the city where I live that provides such perks. Some companies might offer a few, but not at Google or Facebook's level. This is in a metro area with over a million people.
Sure, but I'm not commenting in the discussion on the linked article, I'm commenting here, for which the factors I'm mentioning are relevant to lots of people. If you work at a top tier tech company and live reasonably close to work, working from home doesn't have much draw except possibly if your open office work environment is noisy and distracting.