Whenever a new over-the-top streaming service offering live NFL matches launches in the US, we must always point out that it is limited to certain screens because Verizon holds exclusive rights for streaming live NFL games on mobile devices. A bidding war for these rights could soon erupt, as new negotiations between the NFL and Verizon would extend streaming rights to PCs and tablets, as well as mobiles, but at the cost to Verizon of losing its mobile exclusivity. These exclusive rights have kept the influence of AT&T and Dish Network on smartphone NFL streaming at bay, but these two are now likely to pour cash into picking up NFL mobile streaming rights, although there is no guarantee of these…