Firstly, it isn’t that simple. Teams abiding by the budget might have turned down a £2m upgrade because they only had £1.9m to spend, and instead introduced smaller changes that wouldn’t be as relevant on next years car. It’s not just the case that RB benefitted by that amount only, especially as track data is now so important with wind tunnel restrictions.
Secondly, my broader point is that the FIA aren’t treating the rules in the way that everyone else expected. If people knew in advance that would be the punishment, you’d have seen a lot more breaches. Why not risk a major breach now the FIA have shown themselves to be spineless?
Using a football analogy, if you let people get away with going down under minimal contact, don’t be surprised if teams scream every time they are touched or systematically fake head injuries in the 60th minute to take on energy tablets.