There's often cross-over between crew people who work in features and corporate. Many corporate producers aspire to make no-budget features. You're actually writing for the screen, getting paid, and seeing finished product. Plus a resume full of Fortune 500 writing credits is better than no resume if you're seeking an agent. The aim in corporate video is to make everything as clear and direct as possible.
Screenplays impart information with subtlety - or even obscure or mislead.
This was a terrible burden to undo when I started screenwriting. You need a real sense of selling and the marketplace for most corporate projects. You might be given a 12-inch stack of highly technical documents to absorb in 24 hours. You need to quickly know more about Acme Industries, their products, culture, and markets than the people who have spent 20 years there. The sections, Working from A Distance and Outlines give real-life examples.