What would work instead of the MXM public license?

[Bruce Perens]

Bruce Perens wrote:
> I suggest it as an example of how far a license can go to spoil the 
> potential revenue stream for a non-commercially-licensed derivative of 
> a program, by mandating that a version that can be distributed at zero 
> cost be made available.
You can also require that the creators of derivative works make a 
similar patent grant to yours. Which would make the Open Source folks 
happy while giving the commercial folks even more reason to commercially 
license.

Hm. I guess nobody has worked out the maximally-restrictive Open Source 
license. Oops, I've created a monster.

    Thanks

    Bruce