When I first got my Lakland 55-94, the neck was ram-rod straight and the action was low, so much so that there was a little buzzing on certain strings (yes, even on a Lakland). Since I am the type who cannot stand string buzz, I adjusted the relief a little. Maybe it's the way I play. I like to be able to feel the strings when I play.
Some modern bass greats, like Bakhiti Khumalo, likes very high action. To each his own, I suppose.
Some modern bass greats, like Bakhiti Khumalo, likes very high action. To each his own, I suppose.