I only point out that there is an incentive to agree with the hand that feeds you. This goes for labs employed by industry as well.
You seem to be conflating the benefits of society with the benefits of a living, breathing academic who has kids to feed and bills to pay. There is no conscious "government" - there are only conscious individual actors.
No, they have to produce real, scientific studies which are peer reviewed by other scientists all over the world. If there's a bullshit study, that's usually quickly discredited and the scientist's reputation damaged. (See: Andrew Wakefield)
You're also living in a delusional world where scientists are not in high demand and can't find a much higher paying job at a private corporation, if they wanted to.
Doing science for a government contract is a step down for most scientists.
These are highly trained, skilled, educated, and intelligent people you're talking about.
If a scientist is biased by having an employer with an agenda, and that bias manifests in a study, then that study can be exposed as faulty by other scientists. That's how science works. So unless you believe a global cabal of thousands of scientists and their many different employers are all somehow coordinated in their unwillingness to judge each other's studies as flawed, you must give credence to the overwhelming support among scientists for the idea of anthropogenic climate change.
Likewise, if you believe the multitude of studies is flawed, then go ahead and show how. Pick any couple of dozen and have at it. There are plenty of employers with a strong and admitted bias against global warming (e.g. the oil and gas industry), and they employ scientists. If those scientists produce irrefutable studies disproving anthropogenic climate change, then that would become the accepted science, and those scientists would be viewed as luminaries in the field.
As for the cabal: unfortunately, many believe in exactly that -- including, nominally, President-elect Trump, who has stated climate change is a "hoax". I doubt he believes it's literally a hoax, but I don't doubt he understands that acceptance of the science threatens the bank accounts of those making money from the implicated processes. The same people driving the regulatory capture process, plowing money into congressional elections, etc. The real cabal is the force against the science.
There are so few studies leaning in the other direction that it should be easy to choose an "unfairly" discredited one and expose its field-wide refutations as illogical and biased.
Nor would your or your loved ones' lives be saved next time you're in the hospital.