I'm lucky, I have access to two really shitty, overpriced providers, not just one shitty, overpriced provider.
The price of living in a small town I guess.
Most of us are paying for a fixed amount of data now.
I currently live in San Diego and my situation is mostly the same as yours. My cable option (Time Warner) peaks out at a higher speed, but the only other option is DSL at exactly the same rates you mention (6/0.5). And since the cable option is the only viable truly broadband option the customer service and uptime on it is pretty abysmal because with an essentially captive audience why bother making it better?