What I'm getting at is if you want the fastest service in your area you're only going to have one provider. You most likely will not have two companies that can provide you broadband. You'll probably have an option between DSL, broadband, satellite, or BPL. In either case each one is differentiated by the speed it can provide you.
While it's "competition" it's like saying that the Toyota Camry is a competitor of the Aston Martin Vanquish. Sure, they are both cars, sure, they can both get you from point A to point B, but the true competitor of an Aston Martin would be something equal in value.
The ability to purchase a subpar product is an example of consumer choice but it's not really competition.