I mean I made a website for my mum's store probably 10 years ago, just a landing page, contact details and a map showing where it is + some pictures, put it on Digital Ocean on a basic Linux instance and I haven't touched it since. I don't think I even have the passwords for it anymore - but it just lives there for over a decade without any trouble, the DI host costs like $5 a month and that's the only thing we ever really had to worry about. The website is a basic HTML, it doesn't need to be anything more than that.

My general point is that if that's all you need(and I'd argue most businesses really need just that) then basic infrastructure is both really easy to set up and really resilient long term. That Apache server(or whatever it is, I honestly don't remember) isn't going to randomly fall over on a Tuesday for no reason, unless the fabric of the internet changes then it will continue serving HTML websites forever.