Why can't mom-and-pop investors open an account at a place like Interactive Brokers and trade options on these events? The cost is pretty small per trade (maybe $1-2 for most stock and option trades) and the bid/ask spread isn't that bad if you are talking about an 11% move in a very liquid stock.
Just because if market does not move fast enough in the direction of their option trade - the value of their option investment will very quickly becomes ... $0.00
Because mom and pop investors have lives, children, jobs, bills, and the other stuff that demands their attention away from watching the stock market ever so closely.