Because all other regions have left CS:GO because they got extremely dominated by every EU team.
The best teams and players in the world haven't left CS:GO yet and when that happens they will dominate Valorant too.
It's like when NA switched to CS Source and had their own league because they had no chance against EU in CS 1.6. Same happens with Valorant.
Let those minor regions like NA have some fun while EU hasn't made the switch yet :)