It’s exactly this. The policies put in place by “healthcare administrators” (MBAs and such with healthcare flavoring, not people that actually know how to care for people’s health like doctors and nurses) are designed to process the most patience in the least amount of face time possible, so that each doctor and nurse can see more patients per day, meaning more office visit fees, meaning higher profit. My dad calls it the “cattle shoot” and I feel that’s a pretty apt analogy. It’s the same general reason that fast food restaurants and pharmacies and department stores are perpetually understaffed: fewer staff members means lower “overhead” costs.