There is a good article over on XDA Developers about how device security comes at the cost of owner control. Article is focused on Android, but really applies to many platforms these days.

Walled Gardens: The Trade-off Between Security and Modifiability

With the recent changes in Android 6.0 (Marshmallow) looking set to make life much more difficult for tinkerers, tweakers and modders, a question people often ask me is “why?” – why does (Company name) want to stop me modifying my phone? In this article, I aim to give a (hopefully) complete run-down of many of the factors at play here, and the motivations of involved parties, and who they actually are. There’s no way I will manage to completely cover every angle, but I shall give it my best shot – feel free to add anything you think I forgot in the comments below. […]

Article:

http://www.xda-developers.com/walled-gardens-the-trade-off-between-security-and-modifiability/