Yeah.
But most people are fairly amecable.
People who gain their wealth in the free market typically have to be people persons. Not only to entrapreneurs (people who amass wealth) half to be, competent, and honest, they also have to be compasionate -- if they're not, customers can tell that you don't genuinly care about them and they'll go someplace else.
You won't amass long term wealth if you don't genuinely care about your customers and people in general.
That means that if somebody, somehow, by some fluke has decided to purchase all the surounding property around you, and has ammased the wealth to do it, he'll probably sell it to you the easement at a resonable price. But it's astronomically unlikely. Even being land-locked by multiple property owners is unlikely. But then, you'd have some competition. The surounding property owners would half to compete for the best price for the easement.
But in the free market, with a free market in ROADS as well, entraprenuers would want to provide transportation services.
Most "land-locking" that has occured, can be traced to the lack of free markets in transportation.
So as such, the worry about "land locking" is a ltheoritical "life boat" enquiring and isn't worth worrying about.
It sounds more like a socialist worrying about "what if children can't afford school?" or whatever.
What If, What if, What if?
What if Purple Rhinos, stampeded through downtown New York?
The world isn't fair. And that's a good thing. Deal with it.
Certainly if you were completely cut of and it was a matter of survival, you'd have a right to fight for your survival. Rand's "Survival exception" or whatever you want to call it. But land locking, really isn't something to worry about.
Tracy