It makes sense, but the danger can come when non-paying users unwittingly become dependent on a service that is subsidized by paying customers. What you're describing could make sense if pyx is only private, but what if there is some kind of free-to-use pyx server that people start using? They may not realize they're building on sand until the VC investors start tightening the screws and insist you stop wasting money by providing the free service.
(Even with an entirely private setup, there is the risk that it will encourage too much developer attention to shift to working within that silo and thus starve the non-paying community of support, although I think this risk is less, given Python's enormous breadth of usage across communities of various levels of monetization.)
(Even with an entirely private setup, there is the risk that it will encourage too much developer attention to shift to working within that silo and thus starve the non-paying community of support, although I think this risk is less, given Python's enormous breadth of usage across communities of various levels of monetization.)