What are some of the problems keeping that from happening? Here's one: Money. A service will cost me (more) money. A library I can deploy on already-existing

What are some of the problems keeping that from happening? Here's one: Money. A service will cost me (more) money. A library I can deploy on already-existing infrastructure. Keeping in mind that "Cloud" is 3x to 6x more expensive over running in house, this is a significant drawback.