Firstly, I think you missed that they are small business-owners and simply do not have the time to manage this. Even if I volunteered to do charity work for a local business, they would still need to spend the time to get onto the old developer to transfer domain access, host access, billing info, etc.

Secondly, I no longer work near there and haven't gone to that cafe in about 5 years. I keep up with old colleagues who say the cafe is doing well, but now if I had taken on that work now I'm their contact.

Lastly, this is all ignoring the maintenance cost. What version of PHP? What version of Apache/NGINX/Traefik? Any security vulnerability in Ubuntu in the past half decade? Now we have to play the security cat & mouse game.

At the end of the day, while I don't want to go to Instagram/Facebook to find menus/opening hours, the truth is that it is significantly easier for the average person to just make a social media post.