There are a lot of Legacy Achievements that should be obtainable but are not. Ruthless Gillionaire is one of those.

http://lodestone.finalfantasyxiv.com...0c9127bfe4e624

I am really hoping they will add a lot of those achievements back in that were not on this list. they did add in "* Other achievements may undergo changes to their conditions or temporarily become unavailable upon release of A Realm Reborn." so hopefully they will add it back in soon.