We have laws against it, we punish murderers, but murder still happens! All of our attempts over thousands of years have failed to eradicate murder! There has to be more we can do! Do you have suggestions?
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In case my point isn't made clear: there are some things that are simply facts of life. You will not be able to solve them. People are emotional and will react on those emotions. Sometimes people will do terrible things while acting on these emotions. Sometimes we will fight with one another, sometimes we will throw fists at one another, sometimes we will call each other names. We'll bury each other 6' under ground. These are things that happen. We know they happen. We expect them to happen. While none of us wishes these things happen, we recognize that they will happen. That recognition of things that will happen is what makes those things normal. Normal things do not get our attention. We haven't been trained to care about expected, normal things.
I recognize that tomorrow morning, the sun will rise. It's a very special event. It means the sun is still burning and providing light and life to the planet. It's a normal occurrence though. The sun will rise the day after tomorrow. In fact, the sun will likely rise every day for the rest of my life. It's an expected occurrence. It's a normal one. I don't celebrate it. I don't pay attention to it, most of the time. Some days I might appreciate the sunrise and the beauty of it. Most days it gets ignored.
Some days I notice some terrible occurrence happening in the world. Those terrible things happen every day. They're normal. So most days. They get ignored.
There's plenty of question of how much we're willing to spend to solve the problem, of course (to give a terrible ad absurdium example, it's trivial to stop Internet bullying by shutting off the internet). But when we just hand-wave and say "Can't be fixed," we aren't helping.
In fact, personal abuse online has risen online and I blame people being so open with their personally identifying information. I made a related post on this issue here [0]. The solution is not one that people want to subscribe to. They'd rather share their lives on FB and Twitter for the world to see. "The world" includes nasty people and bullies. If people don't want nasty people and bullies to have access to this information, people need to stop sharing it with the world.
It is much easier to harass someone in a credible manner when you have information about them. No information? Nothing to attack. But so many people want to shove their name, gender, sexuality, religion, age, beliefs, and who-knows-what-else in front of everyones' eyes to see. So people who dislike _____ now have something to attack. People who dislike ____ will always and forever exist. Always. Until we remove the right for individuals to hold their own beliefs or have freedom.
There's nothing about human culture that's consistent except its inconsistency and adaptability. It might not be obvious within a few decades, but big changes do happen.
Opposed to the real world, wannabe bullies have zero chance of seeing a reaction from their victims if those do not react. Online bullies like there DO lose their interest. Just look at past outrages on reddit to see. People need to despise that these short-term hype shitstorms are not worth reacting to'. Maybe ask PR campaigners how they handle it, there should be decades of research.
I am obviously excluding actual stalkers, sociopaths etc. Those are hard problems but not one you can as easily treat and not a widespread problem.