I would disagree with your assessment. OSL was specifically crafted, to close this exact loophole:
> Most other open source licenses treat such network uses of software as internal to the company that runs the server, and they don't require disclosure of source code. That is seen by many nowadays as a loophole that permits large online companies to avoid their reciprocal source code obligations.
> Most other open source licenses treat such network uses of software as internal to the company that runs the server, and they don't require disclosure of source code. That is seen by many nowadays as a loophole that permits large online companies to avoid their reciprocal source code obligations.
http://rosenlaw.com/OSL3.0-explained.htm#_Toc187293088