> Of course we might get some additional contributions here and there,
> but then more and more users would still be stuck, unable or limited
> in the ways and incentives they have to participate in our community.
> Permitting this is very short-sighted. It might bring us apparent
> advantages in the short run, but the more such disrespects there are,
> the more there will be, and the fewer users will be able to become
> developers. In the end, this may kill the whole process, in a tragedy
> of the commons. In the article linked below, I argue this very point,
> comparing how the demand for respecting users' freedoms is what keeps
> the free-loaders away and makes the GPL the most cost-effective
> license for software development, compared with permissive licenses
> and non-Free licenses. The very same arguments apply to a comparison
> between a license that permits tivoization and one that doesn't,
> because the latter is more likely to have more contributors to share
> the load, and both equally reduce the likelihood of unmergeable forks.
>
http://www.lsd.ic.unicamp.br/~oliva/papers/free-software/BMind.pdf