Most of the current teams were strong armed into the current engine configuration. Ferrari, McLaren and Mercedes had absolutely no interest in going to an I4, then changed to V6 turbo format. Instead Renault threatened to withdraw as a powertrain provider, and Honda would not have recommitted for 2015.
The engines sound like complete ass, and all this fuel efficiency bullshit is ruining the series.
Of course, the measures the FIA has taken in F1 compares to the bastardization of Le Mans that the ACO has been overseeing.
Seriously, the days where top level motorsports stood for speed, handling and nothing else may be behind us. The EU is obsessed with the global warming boogeyman and sadly they're the ones in charge of these motorsport bodies.