<div dir="ltr">As the OER movement took off, however, <b><font color="#ff0000">questions about its sustainability became increasingly pressing</font></b> because it could not continue to rely indefinitely on donor funding. Institutions and governments began to review the economics of OER in order to determine whether there was a business case for investing in their production and use.<div>
<br><a href="http://www.col.org/resources/publications/Pages/detail.aspx?PID=421">http://www.col.org/resources/publications/Pages/detail.aspx?PID=421</a></div></div>