From the article: A similar inversion has been taking place in the transport arena, which is now dotted with fiefdoms carved out by state-owned European bus and rail operators whose domestic governments lock up their own markets to outsiders while availing themselves of opportunities here.

Great research by the author there. Private operators have a market share of 25% urban/regional transport in Germany, ie. those railway routes that are co-financed by the public. The biggest private operators are French and British. As long as I don't have to buy a special ticket when I ride their trains -- and I do ride them all the time --, it's all the same to me.

That was my impression as a tourist. I loved the German train system, but I couldn't afford to travel like that on a regular basis.

A BahnCard 25 gives you 25% off journeys, can be combined with saving offers and costs ~60€ per year. A BahnCard 50 gives you 50% off journeys but cannot be combined with savings. I think it costs ~200€ per year. A BahnCard 100 gives you 100% off journeys, i.e. the only extra cost a journay may occur are either seat reservation costs or the "Sprinter" extra for the fast train Frankfurt<->Berlin, which is not included (and technically a seat reservation anyway). This option costs ~3600€ per year or some such.

The point is, if you want to take the train, either book ahead (and maybe get a BahnCard 25), or get one of the other two. I used to do a mere 2h journey a bunch of times a year (as returns), and the BahnCard 50 easily paid for itself in just 2 or 3 trips, while also offering fantastic flexibility, since it's always 50% off the regular price, which is static.

That's how people afford trains. Also, with the BahnCards, you usually get a free ticket for central public transport zones at your destination, for example for Zone A in Berlin.

Just for your example, a single from Munich->Berlin costs 65€ with a BahnCard 50, i.e. 130€ return, booked right now. The booked ticket lets you ride at any time within the next two days, so you are also not tied to a specific train and it's no big deal if you arrive later at the station etc. (which is not the case for special offers, which tie you to a specific train). 130€ return from München Hbf to Berlin Hbf is really not that bad.