Hugo is a strong match for studio websites because it keeps the delivery model simple.
There is no runtime application layer to patch, the output is fast by default, and content structures for services, case studies, landing pages, and journals are straightforward to maintain.
Why that matters in demos
If a site is meant to demonstrate hosting capabilities, the platform itself should reinforce the message. A clean Hugo site does that well because build speed, deployment simplicity, and front-end performance are part of the product story.