Data-Sharing Angst: An Insight into an ongoing Research Project (Feedback appreciated)

Benedikt Fecher, one of our editors here, wrote a blog entry about a systematic review on data sharing in academia that he and his colleague Sascha Friesike conducted. It is part of his doctoral research. Particularly interesting might be the Data Sharing Angst:
Data sharing in academia is good for everyone. It allows better and more research. For the single researcher, however, these advantages are not so apparent. The category Returns indicates that sharing research data is rather related to negative than positive individual outcomes. For instance: Inhibiting returns include concerns about competitivedisadvantage regarding other researchers, commercial misuse of data, the falsification of results and flawed data interpretation by others – all of which can be subsumed as Data sharing Angst. They exist, whether justified or not.
Feedback, questions and ideas are more than welcome!