That's true as far as it goes but I don't see the relevancy. For one thing, I think most of us buy groceries more than we need to interact with a bank clerk or a doctor. But beyond that, if we waved a wand and declared grocery stores were now open between 5:00 and 10:00 PM, we'd just be replacing one tyranny with another (and it would after all be dependent on most customers keeping 9-5 hours). If we just started randomly distributing working days and hours there's no particular guarantee my day off doesn't align with the supermarket's (and anyway the idea that a supermarket isn't time-dependent seems questionable since the whole thing revolves around somewhat time-sensitive deliveries).