The Internet Archive has unfortunately turned into a cross between a poorly organised archive and a pirate site.

How do they financially benefit from pirate material?

By putting banner ads at the top asking for donations. This very lawsuit was provoked by tweeting out links to Frank Sinatra records as part of a fund raising campaign. Also, the existence of pirated material fuels the growth of the site.

Few people go there for the cool weird stuff. Find something old and amazing and blogged about: 12 views, 10 from bots. Now search for Nintendo games.