I normally raise anyone I see who has been KO'd, unfortunately, the Raise effect is only temporary and wears off after 50 seconds - quite a few KO'd people I've seen however in the field seem to have gone afk in the meantime, hence they never accept the raise and the effect wears off, meaning wasted time.

KO doesn't have quite the same stigma as it had in FFXI so a lot of the time people just take it on the chin and return to their homepoint rather than wait around for a raise which might never come.