The Intel advertising campaign kept their branding quite strong in the consumer market and there'd have been an uphill battle to get consumers onto the AMD train for even Dell and other OEMs. With consoles, the branding isn't the CPUs but the console maker's and the audience generally doesn't include grandma & grandpa that only ever watch TV commercials and see an occasional newspaper advertisement when it comes to technology.

On the business technology side it'd be even harder due to thermal characteristics that have been demanded for over a decade now and Intel destroys AMD there without question.