A concession grants the right to operate, maintain and invest in public infrastructure for a set number of years, often collecting the revenue. Assets built usually transfer back to the authority when the term ends.
What the film says
In infrastructure, you can run a road for decades, and never own it. It's called a concession. A government grants the right to run it. Say for thirty years. Thirty years is long. It isn't forever. The operator looks after it, and invests in it. And it collects the tolls. Say the plan is forty million a year. But that depends on the cars. A quarter fewer, and it's thirty. And a forecast can be too hopeful. At the end of the term, what was built usually goes back. So why do investors care? The income can be long and steady, but it has an end date. You don't buy the road. You buy the years.
A simple example with round numbers, not advice. Terms vary by fund.
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