I think we should all remember that deviant gameplay does not equal grief.
And it is "gameplay" that marks the distinction. In a game there are two (or more) sides competing to attain a goal within the constraints of the rules established by the game. Sometimes in online games this impromptu match up is one-sided. An easy victory, a painful loss. It happens, and most mature gamers can take their lumps with dignity and should be good sports when on the winning side. It's a game, after all.
In grief there is no game. Grief is merciless and cruel and nobody likes getting it.
Now, what about grief in CoE? Say you perform some random acts of murder. No game or contest, just slaying a few defenseless townfolk in your hometown because the game lets you do so. Eventually, the players responsible for local defense come roaming your way. You are outmatched, so you run. Now, unless you planned to run from the outset, you might not have any supplies on you. If so, you die in the wilderness, half starved, eaten by pteroguins before you reach the next town.
But perhaps you are a griefer who thinks ahead. So, you need supplies. Maybe your family has some stuff you can take. Who cares about them anyway? You grab up a week's worth of dried emergency rations and some water and put them in a sack. Heavy, but it will get you to the next town for sure. Murder murder, run from the cops. Now you're in the wilderness. There was a road leading out of town, but after the last farm it kind of disappeared. You couldn't afford a map, since you were all about the grief and not looking to work for any money. You die lost in the wilderness, eaten by a pteroguin.
You see where I'm headed here. In order to get away with grief you have to plan ahead. You have to get a job to earn money to be able to buy a map & supplies and to hire a mercenary to help you fight off those damn pteroguins. Before you know it, you're too busy playing the game to grief.
Chronicles of Elyria conquers grief by requiring deliberate intent and the help of others to get anything done. If you simply run around spoiling everyone's fun you will die. A lot. And yes, you could say that people with disposable income will gladly grief for the cost of a spark. To me, that sounds like it will get old quick. Once a character's reputation is tanked they will be exiled and have nowhere to go. No way to get supplies to travel where they don't know your name. No way to get targets for more grief. Other than to buy another spark. So, rather than the minimum of 3.75 months of play for their spark, they could potentially ruin their ability to play in just one day. Know anyone who will pay $30/day to kill a few random people who might or might not be players?