[adra]

If you're a large enterprise, then it's trivial to add yourself your own custom CA and save the cost/hassle of needing to deal with outside companies. The tradeoff being you need to manage it yourself vs basically paying this third party company to survive?

[tptacek]

That's true, but in the bad-old-days of the antidiluvian WebPKI it was somewhat routine to sell big companies CA=YES certs simply to allow them to do this universally without pushing out updates to all their endpoints. It was a terrible, bad practice, and so far as I know it's completely dead now --- except for Microsoft, I guess.

[hulitu]

> If you're a large enterprise, then it's trivial to add yourself your own custom CA

The big CA have their own "Boy club". See Ahmed used cars and certificates.