Don&#x27;t forget CALEA[1], which is done in plain sight:  Telcos don&#x27;t have the ability to build infrastructure that could frustrate law enforcement&#x27;s attempts to listen.  They were so used to the state of affairs where they could listen to conversations that it was legally mandated that technology cater to their tastes at the expense of privacy and security.<p>[1]: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Communications_Assistance_for_Law_Enforcement_Act" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Communications_Assistance_for_...</a>