It'll still cement the possibility as real (and perceived to be more likely than it is, perhaps) and lead to pulling back. We've made long standing/permanent changes to society in reaction to plenty of unlikely events that just hadn't occurred yet before. I think seeing a player die would make players far more fearful of getting it, too, even if they can prove he didn't get it from "work." Maybe I'll end up being wildly wrong (as per usual). But remember, we're not talking about what you or I would do. At the end of the day, MLB just needs 30 billionaires, some politicians and ~750 willing baseball players. The amount of money they stand to lose if they don't have some sort of season is enormous. They didn't become billionaires by prioritizing lives over money. They shut down all of sports just because Rudy Gobert got the virus. (They ultimately would have anyway at some point, but there's no doubt that was the spark.) If someone dies, God forbid, public pressure to shut it down will be insane.