Roads are a public good, not a business (despite what libertarian rhetoric would have you believe). All business seek to enforce their position, by the way.
It's funny how I keep getting charged to drive on certain roads that provide a better service than certain other roads.
[1]http://en.wikipedia.org/wiki/Private_highways_in_the_United_...
And I see a lot of businesses selling stuff like 3d printers who use open designs and contribute changes back to the community. Lock-in is a choice people make.