Battlefield 6 uses modern cloud-based servers integrated with Amazon Web Services (AWS). These cloud servers dynamically spin up to host matchmaking lobbies, gameplay instances, and authentication services.
https://www.youtube.com/shorts/Qmq_gywdA6M
https://www.exitlag.com/blog/battlefield-6-aws-servers/
Because EA does not invest in dedicated servers located around the globe, they use an elastic approach to hosting. This is cheaper than paying for dedicated server hardware, storage, and space. It does NOT make our gameplay more stable. You want to play a certain map using custom search but it takes a long time to start; that's the hosting service on AWS making a custom game just for you.
EA loses profit when they provide "official" server configurations when people want to "rent or lease" a server with the game's core multiplayer configuration. If they can prevent you from owning one product and force you onto the next iteration, they profit. If you don't like the current game they released, they have the answer for you - the very next iterations (aka version) of a game that you must pay for to see if you like or dislike it.
The "server browser" they are going to provide in the future, is more/less just going to give you visibility into servers that are running at the time of your search results based on your filters AND any persistent servers players have created or are labelled supported "experiences." They WILL NOT be community servers like the days of BF3 and 4. BF1 is when they began restricting people from running their own community servers.
Long gone are days of community hosted servers where the community makes the game better. EA want's you nice and comfortable with the restrictions you have now.