I think you're drawing a false correlation here between no-tip countries and poor service. There may be countries that don't have a custom of tipping and also have poor service, but there's very little reason to think that the two are actually related. For the same reason, there's very little to think that level of service in restaurants in the US is related to the expectation of the tip.

More generally, if a country seems to have poor restaurant service overall, that's a cultural thing. Introducing tipping would be unlikely to change it. To think otherwise is to think that waiters are only doing their job on the hope that they get a consideration, and that without that financial lure, they'd become lazy do-nothings. And that's both highly insulting and also illogical, because there's nothing unique about the job of being a waiter that would cause people to be lazy who would otherwise perform their job adequately in every other industry.