"if the funded research is bad then it won't survive for long" that is not necessarily true.
If the funded research is bad -- and it is an area of interest (political, social, industrial, etc) -- then it won't survive for long. So you are correct, if Philip Morris funded bad research relating to the mating habits of fruit flies in a zero gravity environment - it is unlikely to be challenged in a timely manner... but as nobody cares, it doesn't matter.