I don't mind an automated (or manual) feed for a business that advertises the daily special, the price of chicken, or the store hours. Could be RSS/Atom, could be ActivityPub. But it's something I have to explicitly subscribe to.
What I don't want is a business opening an account on a public instance advertising the daily special &c, especially if a bot is posting. That would just pollute the local timeline.
But if they want to set up their own instance that's OK.