said by zeddlar:why don't we just try this.
advertise your service speed at that speed with the words "or faster" after that.
Same reason that cars aren't advertised as $50,000, or less! But when you see "Starting at $22,000", it looks like the car is less than half the price, even if the average model ends up going for $40,000.
Consumers (as a whole) are fairly ignorant and most just fall for what the marketing tells them. Many don't understand what the speeds mean in the first place, so they'll just choose the provider that advertises the highest number.