I gave my sister a very nice upgrade on her first internet connection 25 years ago when the order form with the ISP had that the same feature. You could change

I gave my sister a very nice upgrade on her first internet connection 25 years ago when the order form with the ISP had that the same feature. You could change the speed on any plans they offered. Ordered the cheapest plan but changed the form hidden speed field to maximum. It worked perfectly for many years without us ever being contacted by the ISP regarding this.