I think a lot types can ignore pain though. Not sure it's really type related. ISPs might do things like this solely of their own choosing. Not strictly out of competitiveness or external factors. As long as they're comfortable, it's cool. They care about more about comfort than pain (if that makes sense). EJs go through a lot of pain it seems too. They always seem like workaholics to me, then deal with the fallout when it's too late.
This is probably off the point though.