i would expect people not to use this as their main account for a long time. people will just transfer in a small portion of their money to this automatable ac

i would expect people not to use this as their main account for a long time. people will just transfer in a small portion of their money to this automatable account and not risk 100% so while this roboaccount can go mad and empty everything , you are only out say $3K when your traditional main account still has $9999997K Treasury functions within large corporations do the same thing. They dole out only a portion of the companies wealth to departments so they cannot go mad ( amongst other reasons )