Data mananagement and sharing requirements are not limited to funding agencies. Publishers of scientific journals are beginning to emphasize access to data in their publication requirements encouraging or even requiring authors to provide reasonable access to the data on which published research is based.
For example, Nature's publication guidelines have this to say about the availability of data associated with published articles:
An inherent principle of publication is that others should be able to replicate and build upon the authors' published claims. Therefore, a condition of publication in a Nature journal is that authors are required to make materials, data and associated protocols promptly available to readers without undue qualifications. Any restrictions on the availability of materials or information must be disclosed to the editors at the time of submission. Any restrictions must also be disclosed in the submitted manuscript, including details of how readers can obtain materials and information. If materials are to be distributed by a for-profit company, this must be stated in the paper.
Science takes the requirement a step farther, mandating that data be “deposited in an approved database” (see the section on data availability in their General Information for Authors). The Public Library of Science (PLOS) journals require that “authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception.”
While American Meteorological Society journals do not currently have specific data-sharing requirements for pulication, the AMS Council did adopt a policy statement on “Full and Open Access to Data” in December 2013.
Although not all journals have such stringent data sharing requirements, there is a clear trend favoring unfettered access to scientific data used to create published work. We expect that publishers' data sharing requirements will converge over time so that data underlying most published science will be made available to researchers and the public.