I'm not sure how hard it is to maintain some self hosted apps. It's just set up and forget. It doesn't randomly change interface or license unless you upgrade it as well.

I've used AWS for 10 years but for last 5 years, I've never seen it just go down randomly and even if it did, you have the room to redeploy with some clicks (assuming you have your data backed up regularly) instead of waiting for the uncontrollable.

You seem to take the ops work a bit overly.