Google came down hard on some sites for some unknown violation of the rules for mobile-friendliness. Some other mobile and responsive late adopters are probably concerned about design or budget limitations that could work against the user experience.
And there’s this old trope: “I can spot a WP site at five miles off – they all look alike. Making them responsive just makes them boring.”
Phone view is now a requirement for every site, like it or not. Let’s take a look at some great ones, some bare-minimum ones and more.