Why would you rent a cloud instance that is as overprovisioned as your home computer? Price compare based upon what you'll actually use, not what you have available. You'd be surprised how much you can run on a few small VPSes or a container hosting service like fly.io
A couple of years ago, we did calculations that showed for the price of a year of hosting, we could buy the equipment outright. This price was only for hardware, not electric, cooling, connectivity, etc though.