If you are sane person who read all contracts you sign, you will never want to own a cellphone. At least, in my country(Japan), I can't find a cellphone and wireless network who honors my privacy. So naturally I don't owning a cellphone right now.
But my daily living relies heavily on people who get their job done by using their cellphone. So my boycotting of cellphone means nothing since most of my private activities such as shopping indirectly handled by these untrustworthy cellphone and its network.
If you really want to quit headline companies, You have to go living in a off-grid area, with self-contained life down to the farming or hunter-gathering, always hire a proxy person when you want modern civilized items because acquiring these items requires you to indirectly use Big 5.