This is the side effect of open source. And open source philosophy is at fault but rather developers themselves. We heavily rely upon code written by strangers

This is the side effect of open source. And open source philosophy is at fault but rather developers themselves. We heavily rely upon code written by strangers and maintained by individual or a community without any obligation to any guarantees, including comparability and maintainability. At work when we are working with vendors that provide proprietary software we have contractual obligations, that amongst other things requires stable interfaces for long periods of time, and could be held liable for damages. Something modern model of open source can't offer