Actually the SSN is how you avoid the free market. For example, for those who need whatever features and advantages a monthly rate contract cellphone offers, you have the option (say you go with Verizon, since they're the biggest) of paying 400 bucks depost, or giving them your SSN. Needless to say they'll do their damndest to take the SSN so there must be some kind of kickbacks better than getting to keep and invest your 400 bucks and return it to you 2 years later when it isn't worth 200.
So basically for most private services, including banking (until recently with all this federal "anti terrorist" population control methods) you could simply setup an account where you had to put 1000 bucks in, and leave it in or somesuch. Basically short of closing the account you couldn't get it back (to cover overdrawing, supposedly.) So it was inconvenient in those days but it could be done. Now, some of the small banks still do it, here and there, but the big banks are SSN, TaxID (TID) or tough shit. Try telling them you live on the road and don't feel like giving your house or garage address and they'll go apeshit. In my case, that was often the case.
Most people can't or won't inconvenience themselves (been there too, don't worry) by saving up some cash or going with a prepaid.) Sure, some of it is business related (you absolutely need your email account and such, from your 100.00/mo data plan smart phone or tablet) but even the tablets and smartphones can be prepaid now. Which really just means you treat your comm device as one would a gun. When you run out of minutes of service, you slot in a fresh mag, right? Human laziness has come to the point where the government doesn't have to send jack boots to your house unless you insist on doing things for yourself. The average American will chip himself, when the injectables come out just so hopefully someone ELSE will go through the trouble to chew his food and top off his fuel tank. That's all there is to it. SSN is worthless to TPTB if you refuse to use it as much as possible.
Just remember the hilarious words of the 3 Dead Trolls Privacy Song (youtube it): "For God's sakes lie!... Lie lie lie lie...."
Edit: sure thing casca, just don't forget that you're asking for so called "privileges" (right of travel is now "driving privilege") so you're "volunteering" that number in exchange for an "unnecessary privilege," turn over your drivers license and you'll notice that it has a commercial classification now, regular drivers are all Class C with Trailer, no airbrakes, and commercial guys can be A (tractor trailer/combination vehicle) class B (bus, dump truck, etc) and C (everything else down to taxi, I believe.) By declaring everything interstate commerce, they've used the very system their ancestors designed to lawyer everyone out of their rights and freedom. (Remember, in the socialist clique, making a living IS a privilege, since they decide who lives and who dies.) They're psychos, and psychos get orgasmic pleasure from controlling others by force or fraud... by "getting one over on someone." They're scum, man, and you and I and a few others know it. The masses don't, but hey, the classwork is accelerating fast these days.