Too much money ending up in the pockets of too many powerful people and the people are going to end up trying to survive the consequences of this pipeline.  Only the  wealthiest citizens (1%)  will be able to pay enough to get clean air and water and live away from the contamination.  The rest of the population will have to live with the daily contamination and the mess.  Imagine the average water bill and tax bill for the average citizen as cities struggle to provide reasonably clean water for the average citizen .  The environment will be left to flounder and slowly die.  
Is that the reasoning?  With the population explosion, more destabilizing states, global warming , industrial pollution, dying oceans etc why not do whatever we can to stuff our pockets and get whatever we can to buy ourselves a safe place in the near future where we can survive in some kind of comfort when the sh** hits the fan.  And it will.  And soon.  Spirit bless us all.  The rats are leaving the ship.