An estimated population approaching 1.1 million and connection to the hills of Silicon Valley, the major technology hub in California makes San Jose a highly desirable area that is frequently inhabited by the super-intelligent working for US tech companies.
Those in San Jose can't allow their Internet to glitch or skimp when they're working on important technical imperatives. Therefore, San Jose residents are apt to find the best Internet deals they can.
When you work for Stryker or NVIDIA, you can't have a glitchy home Internet connection, so San Jose residents need to ensure they're connected sufficiently. If your family has a lot of gamers and coders, you're going to need 100mbps or more Internet speeds, but if you simply peruse your email and the web, you might only need 25mbps.