Even if businesses are willing to settle for good enough, governments most certainly will NOT. Those attempting to evade detection will be those they’re most interested in identifying, which is why I mentioned that failure to successfully falsify will get you flagged as having attempted it and probably how. From a government’s perspective, the ones attempting to evade detection are the ones most likely to be criminals or, even worse in their eyes, rebels. Governments, especially authoritarian ones, will make sure the tech constantly pushes the boundaries of what’s possible, or at the very least defeats the vast majority of known evasion techniques.

Then, if business really has left the evaders unidentified, they’ll start adopting the tech from government. Better data with no R&D? Why wouldn’t they at that point? Governments might even subsidize it because it helps them spread the greater surveillance network.