But not for long: By the end of 2002, this --- RECORDSEPARATOR --- untapped market will shrink to 30 percent of --- RECORDSEPARATOR --- UlS. households, making the Internet a mass- --- RECORDSEPARATOR --- market content and commerce medium. --- RECORDSEPARATOR --- Who will emerge as leaders of this new --- RECORDSEPARATOR --- content and commerce medium? Will it be tra- --- RECORDSEPARATOR --- ditional media giants like Time Warner, Disney,