If I have equipment in a datacentre like Equinix, I likely also have circuits (with minimum terms), network equipment and servers (physical devices) that I need

If I have equipment in a datacentre like Equinix, I likely also have circuits (with minimum terms), network equipment and servers (physical devices) that I need to manage and consider how to physically relocate. When I have a service with AWS, I have software I need to relocate. The needs and constraints of relocating software from 1000 servers is very very different to the needs and constraints of relocating 25 racks of equipment. Unless you have 1000 AWS ‘pets’ instead of ‘cattle’, in which case you’ll wish you could just lift-and-shift.