The large operator I worked for in Brisbane in the early days of SS was just changing over from EM and probably had about 2000 EM machines. After initially buying half a dozen of every new release SS game from all manufacturers it was quickly realised the the early SS Gottliebs didn't make any money and were forever breaking down with serious electronic problems.

After a year or so this operator stopped buying Gottliebs mainly because they just didn't make any money!

Williams and Bally machines ruled the roost at that place after this.