The rule is simple, but breaking it wins elections in the short (and medium) term. So each government is tempted to give another discount, or build a new bridge

The rule is simple, but breaking it wins elections in the short (and medium) term. So each government is tempted to give another discount, or build a new bridge, or whatever gives the people a little more money to make them happy. It takes many burns until people understand the problem, and even then, some people will not forget about the good old times when the government gave things for free. Source: Hi from Argentina!