Pretty much what RenjiAsuka is saying.

I hope you realize that the game wouldn't exist or would have to shut its server(s) down if people suddenly stopped recharging.

Of course, cashers are stronger than f2p, after all that is exactly what p2w players want. - more power, getting content waaaay earlier than the rest of players AND being able to rank very high. Some people even get a push because they feel superior with all that power and super cool and strong ninjas.

You see, f2p games heavily rely on those players that are willing to pay money, so of course they get some luxury for that in return. It's just something f2p have to understand. You might consider it unfair because you get your *** beaten on a daily basis but people that invest money into a game of course want something in return for that.

With every new server coming online, it's an 99% guarantee that there will be (heavy) cashers because of above stated reasons. So a simple "hey choose that server instead of this, because we f2p hate getting wrecked by you guys" is not really an option, you know? People are free to spend their money however they like so it's not like you can tell them to just stop recharging.