So you are Polish or Russian then? There was a tabletop RPG I played with my brothers many years ago and it seemed quite well researched, even pointing out that east bloc ammo and NATO ammo of a certain size were not compatible, something not everyone would know or even bother to enforce in a game, loads of details like that. It also said that the computer skill was not available to characters who were enlisted in east bloc armies, only NATO guys could have it. I was quite young and uneducated but it seemed a compelling observation that implied that you guys were a little behind in some areas.
Many punk bands I used to follow continued to release cassettes long after I thought they were out of fashion, and they even translated their print lyrics to Polish even though they only sang in English, French, Spanish. You guys sure bought a lot cassettes so the bands wanted to support that. My friends visited Poland and came back saying there were only cassettes for sale at shows! This was not so long ago either, post 2000 I think.
I'm guessing this had something to do with the fact that in the communist era, cassettes were all there was because western music was technically banned though sold openly anyway. I imagine most of it was pirated on a mass scale from one source record that was smuggled in. Perhaps that meant cassettes, not records for sale, perhaps this tradition just carried on even after CDs were standard elsewhere and the "walls" came down.
Feel free to tell me all of this is wrong, just jumping to conclusions.