Personally, I've found service better in non-tipping countries than in tipping countries. My guess is it's because in most non-tipping countries, waiters spend less time trying to pretend to be friends with customers at every table and more time just doing their job. Having to wait for service because a waiter is spending a lot of time buttering up another table with inane chit-chat is annoying, especially when I have to pay extra for it.

Doubtful, a restaurant with bad service will go kaput. Restaurant owners do care about this kind of thing. It's called the hospitality industry for a reason.

You can:

- Talk back to the server (hopefully to de-escalate rather than escalate) - Ask to talk to their manager - Not come back - Leave a review

That's hardly "nothing"