Only those that WoE for the last few minutes, going for end castles are going for god pieces. Everyone else is just after some fun times. Because supplying a guild is such a financial burden with no real way to recoup (let alone "profit"), there are few, if any new guild leaders. And having members supply themselves currently makes even less sense (aside from trying to help out the guild leader financially), because as you said, there are no personal benefits for WoEing.Sure it does. The people who currently WoE are those who are after god pieces or just after some fun times, there are plenty of people out there who just don't see the point as there is no personal benefits and others who just don't enjoy RO PVP in general.
Supplying additional members is an additional financial burden. And it makes even less sense to do this, if you have zero intent to retain those members you supplied and trained.You can always do (for now), what anyone does in a RPG environment when the current state is to easy, and make it harder for yourself?
Hell, you could always help train up new members with the intent of forging new guilds in the future.