There are not 40 million people in Poland and I was in Radom recently and the streets on a Saturday, which used to be full are now almost empty as people have gone abroad to work and very few now return.
you base your opinion on a visit to Radom on a Saturday? Well, I think then that the Brits are dying out, because in Chickerell, Dorset I could wander around for hours on a Sunday and not meet a soul! This is ridiculous, sorry.
Czech is an even smaller country though their economy is in a better shape-the language is just an old fashioned version of Polish.
Sorry, mate, but apparently you have not much idea about Czech language, or you fall under a widespread Polish impression that Czech is just "funny Polish". Well, it is not, and I find it actually a challenge to learn.