that spent their retirement money to purchase shares
don't invest (or gamble) what you can't afford to lose.
using some people's poor money management skills as an excuse to justify exploitation of the source of your windfall is exceptionally stupid.
a receding tide beaches all boats. every time something like this happens, another genius with another big idea sees it and decides it's not worth it if they're just going to get the result stripped away from them by parasitic suits.