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.