see this:
http://www.onethumbmobile.com/celticher ... 11&t=19626
To summarize, no one cares about morals. All will sell-out in an instant.
They will grow tired of disciplining people, they will grow tired of not bieng in a high level clan, they will grow tired of bieng in a free and open clan and desire exclusivity.
No one actually cares.
I applaud efforts of people like you who create groups whose primary objective is to help people. But I think you are looking for it in the wrong environment. This is a game. Players download this app so they can experience all the content it offers. It just natural that players, as they get higher in levels, would want to improve their characters, get uber armor and weapons. After all, that's what RPGs are about. Make your avatar the best it can be. That's not being selfish, and to call them people who left your clan for more lucrative opportunities as such, isn't justified.
If you want to help the members your clan, then provide them with an environment where they can be happy in the game. You need to provide everyone the opportunity for growth. It's the same in real life. You can be head of a non profit charity organization that does wonderful things to others but if you don't make it worth anyone's time to be part of the organization, you will likely have no long term volunteers or members.
Now you say your clan isn't a starter clan, but and end game clan. Clearly your members didn't feel that way if they all left. Or they didn't simply share your ideals.
There are two types of people in this world: Those who crave closure
A business is more profitable if they don't gouge and piss off customers.