I might pay to use a service that allowed an implementation not in my projects language (and it's faster, I can't be bothered to write it, etc), but close sourcing or licensing of algorithms seems to go against the entire ethos of the community.
Especially in the wake of Oracle v Google and the implications that it could have on APIs, I really think to purposefully close off algorithms is just another step in a really bad direction.
[1]: https://www.reddit.com/r/ruby/comments/4k4fpr/algorithmia_no...