WHAT WOULD BE THE BENEFITS OF THE IPHONE COMING TO VERIZON?

Would the devise cost be cheaper with some-more foe or is it only which Verizon in all has improved service/signal? Would AT&T reduce the devise prices to contest with Verizon? I was formulation on removing in iPhone but I’m not certain if I should wait for and see if Verizon gets it.
My main subject is, if Verizon gets the iPhone too, will the cost of my existent devise go down if AT&T starts dropping devise prices?