Enabling the ability for purchasers to specify an arbitrary server to connect to would require a design change compared to how most games are recently. That feature used to be standard in the early years of online gaming.

We had online-only multiplayer games in the early 2000s with self-hosted servers supporting over 60 players per map. It’s absolutely possible to do better with today’s tech.

Alternative reasons (not mutually exclusive):

• The organization has outdated policies that make delivering changes difficult.
• The systems used in development and delivery haven’t been invested in enough to automate repetitive steps, optimize workflow, and increase safety of changes.

Again, complex changes are obviously going to take more time, but if the simplest changes take significant time or effort then something is wrong.