So what. Double the bits, then you’re back out ahead. This is an arms race that can’t be won by smarts, but can EASILY be won by brute force of a different kind. Compel big e-bizzes and cert authorities to share their keys, and you’re in.
Why hot wire the car when you can just bust a small window in the kitchen with your fist and grab the keys off the keyrack? (And force a gag order on the homeowner, while you’re at it.)