In the UK, research data sharing is light years ahead of any other country. We are fortunate that RCUK policies recognised data sharing as far back as the 1990s. The ESRC Policy established formally in 1995 has yielded some 1400 data collections available in the UK Data Archive, including some 900 qualitative or mixed methods datasets. That is an france rcs data impressive amount of data and demonstrates how far we have come with fostering the idea of research data transparency in the UK. Some of the data are fully open while some and have access restrictions. I cannot point to any significant mass of such academically generated data available in the US, or indeed anywhere else in the world.
Further, multi millions have been invested by Jisc in research data management planning and enabling services. Ten years on, most UK universities have their own data repository, in various states of maturity. management support services helping their research staff prepare data management plans for Research Council bids.
Through this engagement, many academic ethics committees also have an improved understanding of the value of data (vs. its risks and the need for protection through destruction of primary data). In Europe, the European Research Council and Horizon 2020 projects have data sharing mandates.