It's because you can't just build this and expect large organizations to just use this even if they wanted. There's tons of things like compliance, certificatio

It's because you can't just build this and expect large organizations to just use this even if they wanted. There's tons of things like compliance, certifications, internationalization support, accessibility features. You can't launch a "simple" barebones product. Not to mention many companies for legal reasons have to host their content internally. These concerns alone - not withstanding the long sales cycles of corporate sales turns off many startups.