Just the fact that it takes NGOs and journalists to uncover tax evasion practices. The governments and tax offices aren't looking. CumEx was a scandal in 2017, and despite being known since 1992, has only recently led to just a handful of prosecutions.
And CumEx is still being gleefully practiced by some in the upper echelons with smaller values. Literally no-one cares if you're rich and connected, apparently.
