We will not get 50% of the population to use semi-good-crypto. Far more
   than that just do not give any damns at all.
   Legal protection for those that make insecure shit is so huge that
   society is literally stacked against privacy as a whole. The
   "protected-consumer" culture has led to widespread market failure -
   rather than think people buy with their hearts. Simply put, "Think
   Different" turned into "Don't think at all".
   That said, I don't see why there's no company attempting to address the
   niche of "I want it truly secure". Wouldn't governments like if the US
   doesn't spy on them? Wouldn't large companies' officers be very happy
   with a secure e-mail/voice call system?
   If it runs Android apps (protip: Android's JVM is open source) in a
   more secure manner (like, uhm, in-hardware-sandboxing? Libre Hypervisor
   CPU with the OS on it, and a jailed EvilCorp coprocessor that does the
   Android stuff?) it doesn't seem to take that much to build a smartphone
   nowadays (looking at Chinaphones, that is).
   And, many of the people that want it "truly secure" will understand
   that the products will cost more than a mass-produced NSA sponsored
   unit.