I mean, why not? If I'm a small business, and I need a custom (in-house) app, AND I could do it myself with little training, I'd rather do that then not have the business. (Again) how many businesses run on Excel Spreadsheets? Not every business can hire a programming firm to make a boutique app that's used by 100 people.
But I'm also one of those, "Why did FileMaker Pro die?" kinda person. And I still write Perl. I'm a weirdo, but I'm a pragmatic weirdo that likes to get stuff done.