Adjusting prices according to local purchasing power is a reality in the business. Amazon prime, Netflix, iCloud are the first ones coming in to my mind.
Why wouldn't poor street seller take advantage of it?
In the article : "Yet only 8% of the distance travelled by land in the EU is by rail. Even in the most train-happy countries, Austria and the Netherlands, the figures are 13% and 11%. In those countries, more than 75% of land travel is done by car. "
Yes, more than 75% of land travel is done by car because trains are incredibly expensive.
yet I see in the discussions that we should make flying more expensive. Trains are not really competing with airplanes, but personal cars!