They're people, not robots, and guys like s1mple that leep consistency for several years are rare.
If there had been at least one up-and-coming talent they would've picked him already. But apart from ZywOo there was and still is none. When Ex6TenZ looked for a replacement for KQLY he said ALEX was such a talent, they still picked RpK though, and now ALEX plays for Vitality and you want him gone. Don't you see a pattern? A talented guy on paper, just like bodyy or xms, remember how you all liked those "talents" when they came? Again - where are they now?
Do you really think they don't want to pick that consistent player to fix their issues? But they can't because there's none left, ZywOo was the only one, you see they even picked shox and gained some firepower over NBK for sure, but that's about it. It doesn't work that way. Ofc they could find a Stewie2K or an automatic out of almost nowhere, but it works out not so often, otherwise you would already see bodyy and xms being among the best. Some "talents" turn out to be s1mple or ZyWho, the rest simply disappear because they weren't so good or because they were unlucky at joining the right team, although the latter seems like bullshit, people like s1mple or shox played for shitty teams too and they didn't disappear, so it's about having what it takes, and there's no right guy left for Vitality, you see G2 even picked 2 Serbs because of that.
As for international teams - it slightly worked for Na`Vi because they spoke the same language anyway and it was their initial language (it was not for GuardiaN but it's a Slavic language of the same language group so he learned it), look at SK with Stewie2K and tarik, look at FaZe even with karrigan, look at mousesports - it will never work, unless they're native speakers of the language they talk to each other, like Liquid.