Money spinner
The use of that term indicates to me that security is not the primary goal of all this hoopla. Indeed, if it's security that is the issue, then I think LetsEncrypt is doing it right : you got a cert valid for 90 days that can autorenew for free.
If LetsEncrypt can do that, then why can't DigiCert and the rest of them ? Because they're in it for the money, security is just the cow they milk.
So here's your solution, DigiCert : go for 90 days auto-renewable, and turn your hefty fee into a yearly subscription without changing the cost to companies. You get your money, web sites get their certs, companies do not pay more, everyone is happy.
Except your Board, of course, who would have wanted to charge the yearly subscription to the 90-day charge, but you can go screw yourselves.