There are still holes somewhere, where the cash is dragged by a postman without any protection, like a sub-incasator?

Yes imagine it. In the rest of Russia, which is behind the MCAD. A simple example is the Volokolamsky district, without reaching it there is a village of Sychovo, only 80 km from Moscow. In the shops cards are accepted, of course, but there is a market where they bring vegetables / fruits, meat and milk from the barrel - there is cheaper than in the store, and more delicious and grandmothers all go there - the cards will not be accepted there. And the only ATM in the village did not work almost all this summer. The nearest is 20 km away. It is only 80 km from the capital. What to say.
You probably just belong to the category - I do not drive further than the metro stop, the car is evil because, once a year by plane to beautiful places. Therefore, from what is happening in the country you know only from the television, which is naughty lying about how wonderful everything is.