To answer your question: no, the org founder can't be changed, unless the owner leaves.
He must've given someone else perms to invite/kick people and access org bank and storage and etc, it's usually what people do, but if he didn't than sadly you can't do much about it.
There is no way of changing org members to founder. The org however will stay as the founder for the time being till he comes on then does what he needs to do with the org.
To answer your question: no, the org founder can't be changed, unless the owner leaves.
He must've given someone else perms to invite/kick people and access org bank and storage and etc, it's usually what people do, but if he didn't than sadly you can't do much about it.