Anyway - the future for Poland is - IMHO - rail anyway. Much like France or Germany.
Except, as said above, Poland has no "proper" high speed, just the token "CMK Trunk Line". In fact, for now, high speed plans are on hold anyway.
I remember a Sky Europe presentation not so long ago where they came up with a key statistic "the average Brit passenger flies four times a year, the average Pole flies once every four years". Some Polish cities are close to each other and well connected by train, but even a relatively short looking journey like POZ-SZZ is still the best part of four hours.
Still plenty of opportunity to link those corners together, perhaps starting with a young commuter jet fleet and adding capacity as demand grows.