You know how to set up a rock-solid remote hands console to all your servers, I take it? Dial-up modem to a serial console server, serial cables to all the servers (or IPMI on a segregated network and management ports). Then you deal with varying hardware implementations, OSes, setting that up in all your racks in all your colos.
Compare that to AWS, where there are 6 different kinds of remote hands, that work on all hardware and OSes, with no need for expertise, no time taken. No planning, no purchases, no shipment time, no waiting for remote hands to set it up, no diagnosing failures, etc, etc, etc...
That's just one thing. There's a thousand more things, just for a plain old VM. And the cloud provides way more than VMs.
The number of failures you can have on-prem is insane. Hardware can fail for all kinds of reasons (you must know this), and you have to have hot backup/spares, because otherwise you'll find out your spares don't work. Getting new gear in can take weeks (it "shouldn't" take that long, but there's little things like pandemics and global shortages on chips and disks that you can't predict). Power and cooling can go out. There's so many things that can (and eventually will) go wrong.
Why expose your business to that much risk, and have to build that much expertise? To save a few bucks on a server?
Compare that to AWS, where there are 6 different kinds of remote hands, that work on all hardware and OSes, with no need for expertise, no time taken. No planning, no purchases, no shipment time, no waiting for remote hands to set it up, no diagnosing failures, etc, etc, etc...
That's just one thing. There's a thousand more things, just for a plain old VM. And the cloud provides way more than VMs.
The number of failures you can have on-prem is insane. Hardware can fail for all kinds of reasons (you must know this), and you have to have hot backup/spares, because otherwise you'll find out your spares don't work. Getting new gear in can take weeks (it "shouldn't" take that long, but there's little things like pandemics and global shortages on chips and disks that you can't predict). Power and cooling can go out. There's so many things that can (and eventually will) go wrong.
Why expose your business to that much risk, and have to build that much expertise? To save a few bucks on a server?