For countries neighboring west so much, particularly Germany, neither Poland nor Czechia seem to have capitalized much. I find it more impressive how Romania progressed, given the cards it was dealt.
Yes, that is a good point, the further East the smaller the amounts of investment made. Of course Germany had its hands full with the reunification, which is effectively still continuing today. But Poland definitely benefited from its German proximity and Czechia to some extent (though less) as well. In part this is historical, the German territory used to run all the way to the Baltics (not quite voluntarily, Poland was frequently and heavily fought over by both the Russians and the Germans who used it as their personal stomping grounds).