Great question! You can build a new platform that initially satisfy every type of users, you will most likely end up building a platform that nobody ends up finding useful, build a Frankenstein of platform that is extremely hard to use and understand or it will take you forever to build the platform.
What I would do is analyse the different types of users that could be interested in you platform and build it for 1 group. Once you achieve adoption with that group, you can build the features to target another group and repeat until you can cover the entire target market.
If you can provide a bit more detail on your platform, we can go into details specifically for you. The Lean Product playbook from Dan Olsen can also be a good starting point if you want to read more about this