Would there be a high chance of match fixing due to no crowd? Just a thought.
Match fixing chances does get increased or decreased due to crowd. Even if people do not watch the match live in person, but they can watch it live on TV or later recordings on you tube, so there is not much difference.
Forget about the match fixing, it's unlikely to happen as no team would want to lose especially if we are talking of a major games here.
Though there are few people in the arena, but they will make sure the game is played live and stream live, and match fixing IMO is just a theory from bettors.