>> We like to think that we're solving hard problems (and actually, on HN, we're more likely to be), but most companies aren't. A large amount of software is literally just a CRUD form and a database.

I think it's simply 'well, everyone is doing it so...'. So for some people it feels just safer to do what a lot of others do, while others can't be bothered, and a just don't know any better. I'd believe that's a very common reason for this approach :)