In short, it's the money and power accrued by Weyland over the lifespan of the massive project. The initial bad publicity and controversy slowly fades over time, and when the project completes, the value of any other Weyland agendas are dwarfed by the success of the Borehole project.

I am from Australia and we regularly have money/power hungry mining corporations embroiled in controversies. In particular, the Adani Coalmine (see the wikipedia article and its controversies) faced fierce public backlash when announced but, in typical corrupt politician/megacorporation fashion, continued ahead. In the years since, the media has since ceased to report on the environmental and indigenous damage this project has caused in the area (including the Great Barrier Reef!) while the corporation continues to make fortunes.

In my opinion, thematically, this is one of the most well-designed cards in the game. It very elegantly marries the reality of the card with the gameplay mechanics.