Why does hunt mob HP not scale?

[RichardButte]

Ask yourself this. Do we really want someone to solo an A-rank monster in 10 minutes and get the full reward from what should actually take 50 people more than 10 minutes to kill and spread the reward?

I should probably have made this clearer: in those other games, the mob starts at a set HP and scales up as more people arrive to fight it.

A person would NEVER be able to solo an A rank, ever.