Industry senior leadership understands uncertainties in climate science, making them stronger ambassadors to those who shape climate policy.
So why would the oil industry want to stack the negotiarions - following the money - what is it worth them them. Well in a recent article in the Economist magazine (about peak oil) there was this:
The IEA reckons that co-ordinated action to restrict the increase in global temperatures to 2ºC will restrict global demand for oil to 89m b/d in 2030, compared with 105m b/d if no action is taken.
So there is a difference of 16million b/d (that is Barrels Per Day) so given the cost of a barrel is currently around $70, so you can see that it represents $1120 million dollars per day in difference. So event mitigating the supply a bit - by obfuscating the science and promoting uncertainty is worth $millions per day.
That's why denial has been so well funded.