> In addition to all of the authentication steps CAs take for DV and OV certificates, EV certificates require vetting of the business organization’s operational existence, physical address and a telephone call to verify the employment status of the requestor. [1]
[1] https://www.digicert.com/difference-between-dv-ov-and-ev-ssl...
Tying a phone number to a physical address and company is a lot more useful than just proof of control over a domain. Of course its not 100% fool proof and depends on the quality of the CA but still very useful.
It was easy to provide the information for an existing business you're completely unrelated to. Reliably verifying that a person actually represents a company isn't possible in most of the world.
> Tying a phone number to a physical address and company is a lot more useful than just proof of control over a domain.
It might be useful in some cases, but it is never any more secure than domain validation. Which is why browsers don't treat it in a special way anymore, but if you want you can still get EV certificates.