As a country, we put in a decent effort for 3-4 weeks. Once the dam started breaking, it was a lost cause. It's hard to get people on board for an extended period of time when they see a significant chunk of the population flouting guidelines. A lot of older folks I know that wear masks, stay at home, etc. have reached the "if I get it, I get it" phase and returned to their daily lives.
Given the freedoms and economic reality of the western world, it's going to be hard to defend against ongoing spread. The only countries with a real shot of controlling it are islands.