"Can't access the Internet because there's no more bandwidth"

You have a fundamental misunderstanding of how TCP/IP networks work, and about how much bandwidth is available in the Internet core.

There is:

http://www.openidenabled.com/openid/php-standalone -openid-server/

Also, if you just want OpenID for personal use, you can use delegation to configure any URL you control to use any OpenID server you want.