Something which has got very little attention in the DC fandom was that Gosho said this in the Leaked interview notes from the May issue of the magazine 「ダ・ヴィンチ」 (da Vinci)
どうか! どうか、あと二つ質問させてください! 黒ずくめの組織の目的とはナニ? APTX4869の作用から考えると、不老不死が怪しいのでは……。
Please! Please, let me ask 2 more questions! What is the BO’s goal? Going by the APTX4869, I would think immortality…
【青山】「違います。確かにそう思っちゃうよね。今ね、組織の中では大変なことが起こっていますよ」
That’s wrong. It’s true that you’d think that, isn’t it? You see, right now, something really big is happening within the organization.
We also have this from a monthly Conan newspaper interview:
I: So then, the black orginization is full of mysteries. But, what sort of orginization are they, and what is their goal? World Conquest?
A: Well, the world....or rather, they want control of lot's of money. They're moving stealthily in the shadows...sort of like (Al) Capone did right? Or, sort of like the image of the bad guys in 007 or something...sitting there stroking a cat. It's probably best not to say too much.
The first statement seems to rule out immortality as the primary goal of the BO. Personally, given the pretty good evidence that APTX4869 is supposed to be some sort of deaging/immortality/youth drug, I think Gosho's answer might imply that APTX4869 is something needed to achieve another more important goal rather than trying to say APTX is meant to do something else.
Whatever the BO's greater goal is, it might be very expensive. Gosho says they want control of a lot of money, and not just want a lot of money. That suggests to me the money is a means to an end rather than the end itself. Control seems to suggest they might intend to use it in legit business as well as illegal dealings. Keep in mind, with labs to run, experts to hire, bribes to pay, personnel to compensate, and illegal supplies to acquire, the BO's operating costs are probably in the mid to high tens of millions up to lower 100s of millions USD per year (Billions to ten billion yen).
And then we have the other part: "You see, right now, something really big is happening within the organization." I don't know what to make of it. We haven't seen signs of a major reorganization or changeover in leadership. The most we have heard of is a purge to look for allies of Sherry. What else could be going on? Why now? Is this statement just Gosho trying to drum up excitement or has something really changed in the BO recently?