Why Russia did not develop a musical culture like Western European countries

When Vladimir of Kiev converted to Orthodox Christianity in 988 AD, he enforced the practices of the church over all of Russia. This included a dearth of instrumental music in the church and a persecution of influential music outside the church. Whereas in Europe instrumental music evolved primarily in the church, and great composers like Gabrieli, Bach, Handel, and Mozart wrote instrumental masterpieces for church occasions, in Russia there was nothing but unaccompanied choral music, aside from the wandering skomorokhi who were kept out of influence by the church. This strict rule suppressed creativity and experimentation that flourished in Europe, slowing developmental progress, and further detracted any European composers from taking interest in or having opportunities to work in Russia. It was a kind of stagnant pool.

Also the invasion of the Mongols in the 13th century seems to have had a suppressing influence on cultural development. Perhaps it was partly due to 600 years of military action, pushing the Mongols further and further back to their original land, and partly because the dominant Mongols were not a culturally sensitive people; i.e. they had nothing to offer and didn't encourage or tolerate the development of anyone else. I don't know for sure.