The asymmetry is not in information but in the potential gains and losses. Even if the overall EV is lower than 1, it's about risking £100 for a potential £10000 or other much larger figure, 10x/100x/10000x.
I didn't say people don't care, but that the EV is not relevant for calling it an asymmetrical bet.
The EV may also be under 1 for the value but may be >1 for utility. That can easily be true for things with more moderate returns than the extremes of lotteries.
