So let's talk about cost: I don't know how often he sleeps in this way[0] but clearly at £8500/year no one is discussing the externalized cost of taking up (arguably empty) seats he didn't pay for and setting the stage for future "nomads" to do the same and turning first class night trains into a substandard hostel
[0] https://leben-im-zug.de/mein-erster-tag-mit-der-bahncard-100... > That night, I decide to lie down under the seats on my air mattress, the air mattress at 2 meters doesn't quite fit under a 4 seat, so there's still a little bit of the footwell of the square in front of me, but with the low occupancy of the train, this is not a problem whatsoever, with my head half under a seat of the 4 seat. It's tight, but it's enough to lie on your side and change position sometimes at night, I take up about 3 seats in total.