Considering the fact that I'm seeing #TwitterisblockedinTurkey as a worldwide trend despite of the ban I would say they are far from being able to take away the freedom at all. They will also probably realize that not far from now.
However, this is not the whole story. The current ruling party has huge support from the uneducated and/or religious masses that may not be that informed about the technology. Since 3 months new corruption documents are leaked through twitter, which puts pressure on the PM. Just yesterday there was a phone conversation of one of the Ministers leaked and apparently the guy was mocking Islam when he was trying to look like as devoted muslim in front of the public.