It won't be as good as you think. This one is going right next to the Model 3 in Elon's book of things he'll technically deliver but will progressively dial back the claims before and after delivery.
Even if he delivers half of the bandwidth he promised for twice the cost that he quoted, it's still a far better option in many places. I have two ISPs where I live. One only goes up to 12Mbps/1Mbps. The other is a gigabit connection, but it's $200/mo and has a substantial amount of downtime.