I do not see any reason to cancel the games. nba had to because those 2 teams are essentially in quarantine for a time period...you can't keep playing the rest of the schedule with 2 teams out of the rotation.
Assuming the players stay away from the general student and other populations they should be fine to play the games...I would guess it is on the teams to protect their players...if someone gets sick, they miss a game...that randomness happens and is unfair but it happens as a normal course.
These events have been cancelled and altered in an attempt to flatten the curve of the outbreak...once you remove the mass of fans, i do not see how canceling the tourney games does anything to help stop the spread...plus the event has to happen to get its tv money and people being at home want something to watch...viewership is going to be huge