3 ms·7B people are not watching youtube on Firefox 24/7 365 days a year.by beAbU 4y ago7B people are not watching youtube on Firefox 24/7 365 days a year.mulmen 4y agoBut at any given moment someone is.tomrod 4y agoCorrect. Some teeny tiny fraction of market share is. For the conceptual calculation, I refer you to my earlier comment.