[ta1243]

> you could enlist a well-known technology company to [run a PKI],

If you have a single company, then that's easy enough for a group like Mossad to infiltrate. Probably easier than a distributed system.

[mike_hearn]

The best known PKI (webtrust) is many companies, not a single company. So it's distributed but that makes it easier to hack not harder because you have many possible targets instead of just one.