AFAIK there are not many comprehensive studies of this kind done without some sort of corporate\company backing. In the industry its the reputation of the company doing the study that is at stake, so what most companies do is they fund a research but reserve the right to decide in the end if the study will be published or not. If the results end up reflecting positive view on the company that funded it they publish it, otherwise they use the information collected by such study to improve the product