You can get normal certificates for free these days and wildcard certs don't cost significant amounts of money.

At startssl you can get unlimited amounts of wildcard certs for 60 $. I know startssl isn't that popular and partly that's justified.

In summer hopefully let's encrypt will start and make it even easier to get certs for free.

Or in other words: People are working on solving the certificate situation - and even now it is not as bad as you make it sound.