If law enforcement can force software companies to adapt their software to serve law enforcement purposes, why aren’t Ubuntu or ClamAV doing so already? What makes them better at resisting requests from law enforcement than Apple?
Because if some local police agency like the FBI were altering code on an open source project as large as ubuntu then the world would know about it pretty quickly. The linux community would burn every bridge with Canonical and ubuntu would disappear overnight. The idea of the FBI adding malware to ubuntu unnoticed, malware that openly scans files and reports to remote servers, is the stuff of comic books.