Closed source often has the edge of 'focus' because it's working on a very specific type of 'canal'. It doesn't need to handle all types of boat. We used to ha

Closed source often has the edge of 'focus' because it's working on a very specific type of 'canal'. It doesn't need to handle all types of boat. We used to have very well engineered software - bespoke for each customer. Then businessmen came along and said "Hey - we could save time (money) if we re-used existing things". Eventually businesses didn't have anyone who understood the things they were re-using, which were often designed for a slightly different purpose, and things started going wrong. There is no correct answer, other than do you want speed or quality (I leave the cost aspect out, as some things cannot be done faster or better irrespective of the money thrown at them).