This reminds me of the old Grand Prix Manufacturer's Association (GPMA) days where all the members bar two left in the mid-2000s.
tbh I doubt any of them that have the money to spend more than allowed don't, let's face it, it isn't hard to hide spending £100m, you just get your parent company to spend it, buy a part from them for £50k that really cost £5m to design and produce, just think 'government spending' in reverse. As to FOTA, wasn't that how Bernie got control in the first place? F1 is the Republic of Rome, FOTA is the Senate and Bernie is Octavian. Hail Augustus Dictator of Rome.