how much would you be willing to pay for this service?
Otherwise ask yourself this: how much are you willing to pay Amazon to not list your address and a list of possible items at that address for the whole internet to see?
However, to get this started, perhaps an organization like EFF or Mozilla can pay for the first 10-100 most popular websites?
And if your job is to make other people's lives harder for no good reason other than to abuse them then yeah, maybe you should be legally obliged to fix that crap for free.