It means there are people with personal wealth larger than the GDP of many nation states. Some of those people like Musk, Murdoch, Thiel, Putin, bin Salman, Gates, Koch brothers, Zuckerberg, Ellison, Turner, Bloomberg, Adelson, Hoffman, and more who fund campaigns, media blitzes, and activism for various issues and candidates in various parties. Some of them do that worldwide. Some of them own their own media companies. Some of them also control countries, but have enough personal wealth to fund things themselves rather than tying their government personnel to it.