Earlier quoted context omitted.
I believe you are correct. In theory he would be able to turn all his assets into money, but probably he would loose huges amount of it in the process due to the effect you mentioned. I guess these rankings are just rankings. It's an abstract way to value what someone have (or could potentially have) with no relationship to absolute truth.
I am sorry for sidetracking on this, but I need to understand why I am reading so much 'loose' here on HN. Is this error being used with intent? I have no interest in shaming grammar errors, it's just that I am seeing this too often here, in the same place where I read great arguments. English is not my native language, so maybe this is a colloquial use of the word?
Thanks to you that specific error is not gonna happen anymore as it was public pointed out. It will help me remember next time.