Kazakhstan obviously offered him a great deal or he wouldn't have done it. Russia has a lot of top players so maybe Korolev isn't their priority, but by going to Kazakhstan, he will receive more individual attention. can't blame Korolev for doing what he feels is best for his career
of course he'll take the money too
Tarpischev has been whining for years about the lack of money in the federation. Tennis is not a priority like football or hockey. So maybe Kazakhstan didn't have to offer that much really. By the way Tarpi says he is disappointed, but doesn't blame Zhenya, seems like he had plans for Korolev.
There are really not that many guys left to play DC now. Davydenko, Youzhny, injured Tursunov, Andreev in disgusting form, Kunitsyn... Andrey Kuznetsov maybe, in a few years, if he doesn't switch to KZ as well, as he also has had financial difficulties...
Bring Safin and Kafelnikov out of retirement, maybe