[nytgop77]

Your summary is totally right. But first part of the comment feels too one-sided (pro-saas). So couple of balancing thoughts for each point.

(1). Tractor analogy seems too extreme - it's about skiping automation in farming. But if one skips saas, one still automates in house (the amplifier is the automation). Also, frequently "saas" feels less like "tech" and more like "outsourcing".

(2) Total cost of ownership applies to saas as well. Lawyer's time for contract. Developer\architect time to figure out documentation, so company would know what configuration to ask for. Communication being external also costs time.

(3) Solutions for data ownership exist, but it's one additional thing to worry about.