Except there's not going to be any "madness" to get sucked into. A large portion of NCAA Tourney viewers are not regular basketball fans. Watching games without crowds is going to feel like watching Friends (or whatever) without a laugh track for a lot of people.
Hey, I just heard that at the end of the final championship game of the ncaa tourney, they will have the song "One Silent Moment".
It did occur to me that this might be somewhat mitigated by people who watch games in bars (where sound is sometimes muted), but there is generally other audio going on at the bar (another game, music, other patrons) or it would be weird there too. I still think it will be weird for people at home, and I would expect bar attendance to be down as well.
I now believe March Madness will be cancelled as early as tomorrow.
Nothing incites bodily violence quicker than a Duke fan turning in your direction and saying 'scoreboard.'