If a veteran band from Europe such as Running Wild has not at this point, in their long career, ever played live much in the USA, isn't it likely there is a good reason for that? Perhaps their management has no interest in playing the US. Perhaps the band has no interest in playing the US. Perhaps the management or band has done a careful analysis and have determined that it is not worth it for them.
I have certainly experienced countless bands that do not care about selling their album outside of Europe. As vexing as it is for many of us here, the US does not factor into the careers of many overseas bands in any way.