More likely the other haven't just lost in litigation like Google has. The same group or someone similar may turn their attention to Bing, DDG, and others, now that this first case has completed in their favour. Unless of course the traffic through other search engines is not deemed significant enough to warrant the lawyer's expensive time, though the first case having been won will presumably reduce the potential costs of future cases (or make the search providers capitulate to "please turn this off voluntarily or..." without the need for even that effort).