Maybe you mean that our economy is at the Turkish/Egyptian/Arabic level.
Only because those countries have had capitalism for the whole time after WW2, without Communist experiments.
Sarmatian doesn't mean Asian. Especially Poles were Sarmatians/Slavs who went far westwards and mixed into the western world.
I imagine that Poles were those Sarmatians who had more of the entrepreneur spirit. Probably we wanted to earn money on the amber trade with southern Europe.
The Slavs who entered the Balkans had as their aim pillage in the Byzantine territories.
And Russians - they remained where they were - they were those averse to risk and travel. Huns went west, Avars went west, and perished. However, Russians didn't predict one danger from the far east - the Mongols (which was to come centuries later).
And that steppe spirit is in us somehow - the spirit of unrestrained liberty.
Poland and Turkey? From what I read Turks and Mongols are close cousins. Turks not always lived in Turkey - earlier close to Mongolia. We had wars, but later Turkey understood that Russia was a stronger enemy than the now partitioned Poland and started to support our independence - to weaken Russia. For example our greatest romantic poet Mickiewicz organised a Polish legion in Turkey around 1850.
But some Oriental influences - let's not exaggerate. Maybe in the garb of the nobility, but not in buildings. Polish nobility was deep into Latin, many spoke a strange mixture of Polish and Latin, into ancient Roman texts, maybe because of closeness to the Vatican, and Latin was the language used in churches - this changed only around 1960. In Russia they still have Greek in tserkevs.