My thoughts: 1) Frequency trading probably does disadvantage nonfrequency investors, but 2) it has always been this way, where the rich have ridiculous access and advantages whereas the masses don't. But, overall, I'm not sure it really matters when 85% of the wealth is owned by 20% of the population. Basically, the probability of really being affected by this are probably pretty small and one will probably end up having to depend upon social security in any case.