Transportation and trade routes in 15th century Europe were often dominated by feudal lords. Their towering castles, strategically located on rivers and mountain passes compelled the people who need to pass through their lands for whatever purpose, to pay tolls and fees. It hindered free trade and communications between peoples but it served its purpose, which was to make the lords rich. 
It is interesting that a Liberal Government is handing over today's public access to the country to the new feudal lords in the private sector. The Provincial Conservatives demonstrated how this would work with the 407 in Ontario. It is a fantastic road to travel on mainly because only the monied few can afford the fares. The peasants are obliged to sweat their way through on the crushed remains of the 401.
Welcome back Canada.