It's possible, but a couple of points to consider: 1) Wildcards may have a net negative effect on total issuance if subscribers who were getting many non-wildc

It's possible, but a couple of points to consider: 1) Wildcards may have a net negative effect on total issuance if subscribers who were getting many non-wildcard certificates before replace them with a single wildcard. I'm not sure this will be the case, but it could be. I expect wildcards will help move many more sites to HTTPS - perhaps just with fewer actual certs. 2) Wildcard validation from Let's Encrypt will be restricted to DNS validation, and many people don't have the ability to automate modifications to their DNS records. That being the case, it will be a bit more difficult to validate for wildcard certificates than for non-wildcards.