Start with a failing economy. Throw in a team of inexperienced politicians, people in fact who had spent their careers deliberately avoiding official politics. Add a population with the highest possible expectations. And, as a wild card, introduce an international community that was not offering very much in the way of financial assistance.
Until the 1970s, drug addicts didn't exist in Poland -- at least not officially. In those days, drugs were expensive and the supply was limited, so the Polish state could hide the problem by giving a different label to the small number of addicts. But then heroin became more readily available. And addiction started to grow.
Doing business entails certain risks. You make a big investment of money and time, and you hope that your gamble pays off. Maybe people will come to your restaurant. Maybe they will buy your product. Maybe they will contract for your services. But you can't be sure. You've taken out loans on the expectation that if you build it, they will come.