From the next Business Central 2020 Wave2 (October release), you can have Business Central with an unlimited number of databases; especially for multinationals, with a database per country (one for branch ad example)…
Having more environments gives you new opportunities. For example, you can create more business branches, move into more countries or regions, or expand within your current country or region.
“Administrators can create the additional environments in the Business Central admin center. On the Capacity page, you can see how many environments of each type you can create.”