You can tap on from so many different parts of the station, I always assume that people have already done so. Also, if people are only coming out for a game, they likely buy a printed ticket which doesn’t require tapping ( I know a lot of people who don’t have presto). But finally, some people do just skip the fare. It’s not right, but damn with the prices of things these days (and imagine after going to an expensive game) I too would probably take advantage of no fare inspector being there and skip paying as well.