why is taking open-source code closed expensive?

[Matthew Flaschen]

David Woolley wrote:
> Joseph Hick wrote:
> 
>> i would want to use a license that can be proved to be
>> valid in court and can save my open source product.
> 
> I doubt that is achievable with a licence.  I think you will need a
> contract (commercial software licence *agreements* are really contracts).

The Academic Free License (http://opensource.org/licenses/academic.php)
and Open Software License
(http://www.opensource.org/licenses/osl-3.0.php) attempt to benefit from
the better enforceability of contracts while still complying with the
OSD; they have a semi-optional "express assent" clause.

Matthew Flaschen