You don't get out much, do you?
I've known tons of lawyers that won't look at their watch and tell you the time, unless they get a tenner from it. To be fair, they are used to folks trying to extract highly valuable services from them, for free, so it's sort of a defense mechanism.
I have (and have had) many friends that are lawyers. A few will help me out with quick consults for free. I even have one chap that has gone beyond that, and I'm grateful. I'm quite aware of the value of their services, and always offer (and am willing) to pay; even if they decline to invoice me.
This creates even more incentives to have a paywall--one, it keeps people from bugging you for free legal advice that can bite them and you in the ass later, and two, it ensures that the people who do get advice from you have followed your procedures for setting up an account with you.