Wages in taxi buisness
It would seem that most taxis are cashing in on routes around the city, which is the classic scenario: we are shopping and we want to go home, and unfortunately public transport will not come for another hour. What we do? We call for a taxi and in a few minutes we're going home. What is interesting with such courses taxi drivers do not earn much, the majority goes to fixed costs and fuel.
Intercity routes or airport transportation is the most profitable routes for the taxi driver and transport companies. The more such routes during the month, the better for the driver. Shorter routes is more filling and the way to the taxi does not stay for all day long.
From Wikipedia: Taxicab
A taxicab, also known as a taxi or a cab, is a type of vehicle for hire with a driver, used by a single passenger or small group of passengers, often for a non-shared ride. A taxicab conveys passengers between locations of their choice. This differs from other modes of public transport where the pick-up and drop-off locations are determined by the service provider, not by the passenger, although demand responsive transport and share taxis provide a hybrid bus/taxi mode.
Right after arrival
In Poland, there are some very popular among foreigners airports. These include, among others, Warsaw Chopin Airport, the port Reymont in Lodz. These ports handle most of directions and probably if you are going to visit Poland you'll land at one of them.
After arrival you should take a taxi to get to place where you want to stay during your stay in Poland. Of course, nothing stands in the way to start your tour from the first day, so you might want to ask the taxi driver about the nearest monument or a place worth visiting.