It's because of the way they play Memnoch, Greece will have trouble filling stadiums outside of Greece with that type of play. If people want to sleep, they much rather do it in their own beds.
The way the Czechs were playing, was a pleasure to watch for everyone who respects the game of football, Greece's style of play is destructive, boring and ugly. It's too bad that every once in a while countries who play that style get rewarded for it. It will only mean that in the future more countries are gonna try to play like this, because it might pay off, and that's not something this game needs.