There has got to be a better way. I mean Sonic just lost a potential customer because I won't "Try Again Later".
Ubuntu + Firefox FWIW
That's the kind of advanced user that appreciates and uses an internet provider like Sonic.net.
It would be like a mobile phone service provider requiring people to pass a turing test if they call into the sales line from a mobile phone.
ISPs are way too paranoid about this, though. Simple rate limiting is more than enough. If someone builds a botnet to check what buildings you're available in, maps the addresses to the person in charge of IT at every company in the building, signs the necessary access agreements, digs up the streets to install fiber, then calls your happy customers and asks them to switch, ... good luck to them. Meanwhile, an easy-to-use map or availability checker for potential customers probably has a high probability of getting you a sale.