Information is much easier to digest if it is presented graphically. And if this is a map, then you can clearly see everything. Canonical introduced the map, which marked the server running Ubuntu.
As we can see, most of the servers are located in Europe. They mainly concentrated in Holland and England. From the first glance in Russia you will not see the Ubuntu Servers. If we look, for example, at the Central Federal District, we will make out ... only 4 servers: ')
By the way, one of them is right in the center of Moscow. Maybe this is the personal server of the President?