When React alone can be enough
If the product is mostly an internal app or a highly controlled client-side experience, React can be the right fit. It keeps the front end focused and lets the team assemble the rest of the stack deliberately.
Why Next.js often wins for startups
For public-facing products, Next.js can simplify routing, server rendering, and page performance. That makes it easier to build a web app that also supports marketing and search visibility well.
Pick the stack that matches the launch plan
The best choice is the one that matches the product, the team, and the first release timeline. A framework should reduce friction, not add another layer of decisions.