Open source licenses say nothing about giving back and in fact the OSI quite deliberately moved away from that idea as a key differentiator between themselves a

Open source licenses say nothing about giving back and in fact the OSI quite deliberately moved away from that idea as a key differentiator between themselves and the FSF. If someone wants to distribute their software with the expectation or requirement that derivative works in some sense give back to the community they should use the GPL or AGPL.