If you as a single player want to "punish" the gankers, build a ship and skill that can escape. The people who get all their enjoyment from blowing up innocent are unlikely to enjoy every innocent escaping.In a gameplay area the size of this one, lawful players are at a disadvantage simply because the gankers don't care who they target and may attack any ship they encounter, whereas the lawfuls would require to find the gankers. There's also the point that the chase may be exactly what some of those ganking actually want - in which case why reward the behaviour at all?
Those who don't care if their target has "fun", when the target may not even be interested in combat at all, have only themselves to blame if players choose not to play with them. Just as the ability to shoot at anything one instances with is a core feature of the game, so is the ability to choose whether or not to play with other players, be it by mode choice or by use of the block feature.
Solo is as valid a mode choice as Open - and all players affect the galaxy, regardless of game mode. If some players choose to play in a manner that has the effect of discouraging the combat disinclined from playing in Open then that's their choice - and they are not in control of the choices of others.
The oft ignored Private Group feature offers sociable players an option for co-operative play without the unwanted attentions of those who simply like to shoot at players (and don't care if they enjoy it).
Going to the forums too complain is also unhelpful, as if they enjoy annoying people, you have just proven they succeeded.