Why do FCs get 75% of the wards?

[Shibi]

Thank you.

Zodiark FC's total : 1644
Zodiark 1-10 members fc's : 920 (55%)

My original number might have been a bit too high, but it's still over half of them, being purely used either for submarines,abandoned,probably empty or used as personals with a few alts inside. My point more than stands, despite the percentage being a bit lower.

Lucky Bancho's latest numbers are a better guide, I feel.

A submariner will have just the one character, no need for 4, as you can use them for other houses. So 396 such FCs. However, you likely need to see which of those have housing and which don't. I think the true number will be under the 396.