Should I be closing shops?

Why nexon just don't ban all accounts that are registered to an ip in that day or the previous 24hrs. That would probably ban some mains from hackers and noob hackers. If you hack with one account, you kinda deserve to get all of them banned...

If only it were that simple.
Some hackers simply download tools and use them. Those ones are pretty easily filtered by IP bans.
The problem is the actual hackers: People who know what they are doing.
For them, it isn't that hard to run their IP through a couple different proxies, move to another location and use that IP, or even change their ISP. (Internet Service Provider). The only way to stop hacking is literally to stop hacking from being possible. The issue I see, as regular issues are a problem for nexon, that they either do not have the number of coders / testers, or the skills required to accomplish this, or they cannot afford them. Either way, I don't see hacking stopping any time soon.

In the end, it's up to the community to act responsibly and combat hackers to the best of their ability. Sadly though...most of the community is young, brash, and greedy. So that more than likely will not happen any time soon.