Well, one reason of course is income. Low-income population's use of the Internet is less. For example, for those who earn $75,000 annually, over 70% have computers linked to the Internet.
$250 billion would be given directly to American taxpayers in the hopes that they'll spend it but those payments would only go to individuals who earn less than $99,000 a year or couples who earn less than $198,000 a year.