Upload VR has a statement from John Carmack after asking the former Oculus and id Software CTO about news that Oculus is shutting down Echo VR on Oculus Quest. This offers a gamer-centric outlook on the value companies derive from keeping older games running, and the irreplaceable goodwill lost when they are closed. Here's a bit on how games can be designed to better account for changes down the road:

Every game should make sure they still work at some level without central server support. Even when not looking at end of life concerns, being able to work when the internet is down is valuable. If you can support some level of LAN play for a multiplayer game, the door is at least open for people to write proxies in the future. Supporting user-run servers as an option can actually save on hosting costs, and also opens up various community creative avenues.

Be disciplined about your build processes and what you put in your source tree, so there is at least the possibility of making the project open source. Think twice before adding dependencies that you can’t redistribute, and consider testing with stubbed out versions of the things you do use. Don’t do things in your code that wouldn’t be acceptable for the whole world to see. Most of game development is a panicky rush to make things stop falling apart long enough to ship, so it can be hard to dedicated time to fundamental software engineering, but there is a satisfaction to it, and it can pay off with less problematic late stage development.