Unfortunately, no, it's not enough. Drills will tell the story, and nothing else matters 'til then. As much as we all think we have an amazing property here, based on a lot of really great DD (IMO), it's all just speculation 'til the drills prove it out.

If Mr. Employee actually manages to convince his company to spend $3.5B and he ends up being wrong, that would be the end of his company! You don't go out and throw $3.5B at anything until you're absolutely sure about what you're buying.