Some do.  And Probably some dont. But I think majority does give up ice.  Because its a lot of work looking for good stuff.  Plus there are more sbl than Sq.  And not many good Sq.  Though the is enough to go arround.

Then again is the job scope.  Once you are in you 45 and about.  Probably you end up with a big get car.  Or company car.  You Probably want do that sound prooving all over again.  The along of the process. 

And you spend less time In the car compare at home and office  .  When  you were a sales rep. Travel long hours I  the car.  Ice was important.  And of you are those end up buying a nice audi. Probably no need ice anymore.