A lot of the companies that do/did this potentially no-longer do it themselves. E.g. years ago a company might have run their own LAMP stack to host a website

A lot of the companies that do/did this potentially no-longer do it themselves. E.g. years ago a company might have run their own LAMP stack to host a website or a small online store or whatever. But in this age of SaaS it is easier for these smaller shops to just use something like Wix or Shopify to handle it for them, complete with fancy wysiwyg editors etc. I used to get requests to "add payments" or something to websites I used to help out with so that they could basically do an online shop. At the time I actively rejected those requests as there were huge headaches around things like PCI compliance and the like. Fast forward a decade or more and with GDPR and Cookie laws etc it is a total non-brainer to use a hosted service where they handle all of this, rather than spin up your own ecommerce solution. It does not make sense to roll your own unless you have a large engineering team, at which point you move beyond some random thing running in some random data center somewhere. Of course not everything online is ecommerce or CMS-oriented - there will be niche and custom stuff that is not handled well by SaaS offerings.