The problem is your neighbourhood soccer moms have no idea what 1TB is, they just see that ISP1 costs $80 and ISP2 costs $130. You'd need all the ISPs to switch

The problem is your neighbourhood soccer moms have no idea what 1TB is, they just see that ISP1 costs $80 and ISP2 costs $130. You'd need all the ISPs to switch to this "discount" scheme all at once, which won't happen. Basically every service provider in every industry uses the same "extra fees" model over "discount". From mobility networks to drycleaners to restaurants. Customers just aren't used to seeing things the other way around, and will immediately balk at the sight of higher initial prices.