
While Helmut Marko is lamenting a conspiracy against the team with the FIA and Bernie Ecclestone conspiring to keep Sebastian Vettel from winning a third title, Christian Horner is usually answering questions with a "who us? we are not doing anything..." and rival teams have been grumbling about RBR and Renault since pre season testing, e the FIA has been quite lenient with the team.
Sure there have been on track penalties (all deserved) and the FIA disallowed their brake ducts venting through the front axle in Canada but let's have a look at what they have gotten away with, without sanctions, this season so far.

2. Traction Control and blown exhaust: that was the net effect of some engine maps RBR have been running. If you've been to any races this year, or perhaps if you have heard nat sound clips, you might have noted the odd ratcheting sound coming at times from the RS27 in the back of the Red Bulls. The issue with the engine maps boils down to creating a dip in the torque curve with the effect of limiting chances of wheelspin. This was apparently accomplished by allowing unburned mix to flow through the combustion chamber and ignite in the headers. Hot blowing as specifically forbidden by the rules.
While you have to admire the brilliance of Renault engineers in finding a way to do this in the gray areas still in the rules specifically banning the very thing they accomplished, you can see how this would irk others, much like Brawn's double diffuser did a few seasons back. The FIA rather than punish the intent, preferred to put a patch on the wording of the rules.
3. Red Bull was,according to AutoMotor+sport, caught adjusting the ride height on Vettel's car in Parc Fermée in Canada. This might be the most outrageous instance, again outlined in Schimit's article, officials discovered a ride height adjustment made by changing the extension on the front third shock on the RBR which is designed to be easily adjusted by hand.
Shocks settings cannot be changed between qualifying and the race. Rather than punish, the FIA allowed RBR to reset the shock and enacted a rule forcing all suspension adjustments to require a clearly visible tool so tech inspectors can better police Parc Fermée. How many times has Red Bull adjusted suspensions before?
Of course, anything not specifically forbidden in the rules is by definition legal so the FIA does share some responsibility and perhaps they simply don't want to look bad for having missed those points.
As I said... Furbissimi!
