There is good stuff in there, from the driverless trains to lower construction costs, for the underground lines by going shallow and standardizing much of the station design.
That said, the profit bit is a stretch......... its achieved first by having used real estate development to subsidize construction costs to the tune of billions of dollars, and doing so with land that was largely publicly owned (former military base) or created (new island/peninsula), debt was taken on at government-backed interest rates (much lower than commercial ones), and so the operating system doesn't have to cover the capital cost/debt-service in the same way one might traditionally calculate.
To be clear, I'm not criticizing the model which has much to recommend it (though if you look at the ugly shopping mall that was built on the former base, its not all a panacea). I'm simply saying the words 'operating profit' may be accurate, yet still misleading to the North American ear.
High fares are also worth talking about. The Copenhagen Metro covers 4 zones in the Denmark transit/rail regime, if you require a 4-zone ticket (valid for 1hr 45m) you'll fork out just over $8 CAD, the cheapest possible trip (2 zones) is equivalent to $5.15 per ticket (per direction) and is valid for only 1hr 15m.
Compare to TTC at $3.30 for 2 hours of valid fare.
A reading of their financials from 2024 may be worth a look for transit/policy nerds:
That aggressive pricing is possible, even a city that largely eschews tolls, because, well, there are no highways servicing the core.
When your ring road looks like this:
View attachment 731189
To be clear, there are highways:
View attachment 731190
But these begin a few km outside the old city/core area.
Oh, and did I mention that parking all day in the core is ~$60?
Which again is not to discount the good elements in the Copenhagen system, merely to point things are rarely as simple as they are portrayed, many moving parts.