Craig makes a good point above. In a small organisation you don't have as many developers and you are likely to be familiar with all ETL processing. There is little to no chance a developer (like in another department if a big company) can deploy his ETL somewhere and others not know about it, as can be the case in a larger company. You likely don't have that many servers to hide things in. Thus those larger business, that can also afford extra licenses, will want all developers' ETL's centrally located for easier administering such quality checks.