We have no need to be play the blame game. There is plenty of blame to go around.
All corporations, including BP, are more concerned with the bottom line than anything else. They will pinch a dollar to save a penny. They will cut corners any way they can to maximize their profits.
However, this does not mean BP deliberately caused this blow out to happen. No business will deliberately sabotage their own operation. They wanted to sell the oil for a profit not watch millions of dollars float away with the tide. No business wants to throw away billions of dollars in lost equipment and revenue, nor pay billions in fines, damages, etc.
If this blowout had occurred on land or in shallow water it would be much easier to contain and control. So Why was BP pushing the limits of technology by drilling so far out and deep? Because the environmentalists and the government will not allow the oil companies to drill close to shore or on many of the land based oil fields.
That same government also refuses to allow state governors to take necessary measures to mitigate the problem until they do an "environmental impact study". And, while this inept government drags it's feet and stonewalls measures that could have been taken immediately, the oil IS making a major impact on the environment and the economy.
Some will say that oil has been leaking to the surface for millions of years and that the amount released so far is a drop in the bucket of a very big ocean. While that may be true; it is a major problem when it adversely impacts one third of our domestic oil production, one third of our domestic sea food production, causes the loss of thousands of jobs, and the loss of millions of dollars in local business revenue. Factor in the adverse effects to the regions environment and the health of the local population and you have a disaster that will last for years.
And then we have BP who so far has been unable to stop the blowout and may never be able to contain it and a government that is so inept that it's done nothing but get it the way and point fingers at everyone but itself; and you have a disaster that may last decades.
http://www.youtube.com/watch?v=xRl6-o8CpXA&feature=player_embedded