Public, Personal, Work space

Here is another example of someone temporally carving out boundaries in a very very busy London landmark. His motivation is quite obvious, but what are the motivations to comply/allow for tourists ? commuters ? nearby shops owners ?
Personally I was annoyed (no surprise here) by the amount of space requisitioned because it forced me to change my trajectory.

Maybe Adam has the answer, I need to read his book.

Technorati: behaviour, location, London, privacy, public space