For Americans, anyway (with tongue firmly and deeply in cheek):
1) The field is the size of a runway for a Boeing 747
2) Having the game last--what?--8 hours each, with no breaks, commercials, half-times, songs or anything and
3) Who knows WHEN the match will actually end because at any time, they may well add ADDITIONAL minutes to the time clock
It's just way too arbitrary, even Socialist for most American tastes.