Roku is a huge force in streaming, and a hurdle for HBO Max. Roku controls nearly 45 percent of set top box viewing time https://t.co/FVDJ17JHam $viac $cmcsa $dis $nflx $aapl $t $sne $roku $amzn $disca $lgf $twtr $fox $fb $goog $snap $stx $mgm https://t.co/zYwr7SOo9a