the customer can self-determine just fine using a web based SaaS no-code website builder. it's not like this is a different type of app. the thing is making a website that is more also hosted by the maker of the app. if you want to make a website to host on your own servers, then you are not the target audience of the web app.

you're like the person complaining that the hammer isn't very useful for driving in the screw. you need a different tool/app if you want to make a site you host yourself