Yeah, I've never thought it compulsory to reimburse for any open source software. Some projects are "lucky" enough to have large corporate contributors/stewards

Yeah, I've never thought it compulsory to reimburse for any open source software. Some projects are "lucky" enough to have large corporate contributors/stewards, and others are projects of passion. Maintenance activities (bug reports, feature additions, participation in community discussions, etc.) should be considered a form of "paying" for OSS - you're giving back and improving the ecosystem. I've done plenty of that for various projects; it's something that I enjoy doing.