The WSO2 web site extols their participation in the open source community, and their github repository gives an option to download the Enterprise Integrator under the Apache2 license (I click the option of not getting automatic updates). BUT, the following screen requires me to accept their evaluation/commercial license EULA to download the Windows installer!
Is this an oversight, or an indication of their strategic direction?
Yes, but the builds/releases with open source Apache2 license, are only on the github as ZIP files. For example: WSO2EI 6.6.0, and on the bottom site you will see assets: wso2ei-6.6.0.zip. This package is released under Apache2 license, and the license is included in that zip file.
The installation from wso2.com site, or installation from apt-get are considered as commercial license.