> everyone just gets why.  Take a certain Russian company as an example. 
>  When I joined, that company really fancied permissive licences. 
>  However, it also feared releasing code that its competition would then
> use against it in the market.  The give back clause of the GPL has a
> solid answer to this (your competition has to show you the code they
> would compete with you on),

Here is the core question of consequences for non-compliance again:

What if the competition doesn't want to show the code? Were you able to
advertise a "don't sue" approach to that company?