http://www.autosport.com/news/report...ce=mostpopular
Williams performance chief Rob Smedley says it would be technically straightforward to introduce closed cockpits into Formula 1, should the sport decide to in the wake of Jules Bianchi's accident. Marussia F1 driver Bianchi suffered a serious head injury after crashing into a recovery vehicle in the closing stages of the Japanese Grand Prix.

The sport has repeatedly discussed introducing cockpit surrounds on cars, since Felipe Massa suffered his own serious head injury during qualifying for the 2009 Hungarian GP and Fernando Alonso had a fortunate escape at the start of the 2012 Belgian GP.
Formula 1's governing body the FIA has conducted experiments with cockpit canopies (pictured, below) and Smedley said it would be a simple process for the sport to introduce them.
- Autosport, 6th Oct 2014

What is it going to take eh? If drivers are paid many millions of dollarpounds, doesn't it make sense for teams to protect their assets?