Another excerpt from "The Conversation"
theconversation.com/when-big-companies-fund-academic-research-the-truth-often-comes-last-119164

".Industry sponsors suppress publication.
An early career academic recently sought my advice about her industry-funded research. Under the funding contract - that was signed by her supervisor - she wouldn't be able to publish the results of her clinical trial. Another researcher, a doctoral student, asked for help with her dissertation. Her work falls under the scope of her PhD supervisor's research funding agreement with a company. This agreement prevented the publication of any work deemed commercial-in-confidence by the industry funder. So, she will not be allowed to submit the papers to fulfil her dissertation requirements."

It's not so much scientists, that are a problem it's who's funding them.