Otherwise they should be forced to state the game is a rental not purchased if it requires a server that may shut down.
But that is what they already do. Currently this might be hidden in the EULA, that no one reads, but even making this plainly visible during purchase wouldn’t change much. I is not like the players have much choice when they want to play that specific game.
Valve is the company responsible for unlocking my PC for gaming. Most games can now be played without using Windows and Valve is mostly responsible for that. Because most game developers do not care and would rather force you to use proprietary OS than let you use what you prefer.
Have you ever worked with a computer with modern general-purpose OS like Linux and no RTC? It sucks. It is not strictly necessary, you can live without it, but you need workarounds for basic stuff timestamps in log files or in the file system. At least for a minute until NTP connection is established, but may be longer when internet connection is not available. And when routers are rebooted most often? When troubleshooting broken internet connection. This is also the time when properly timestamped logs could be useful.
And battery backed RTC is cheap. It doesn’t fit on a Raspberry Pi board, but can easily fit into a router case. No excuse for omitting it.
But that is what they already do. Currently this might be hidden in the EULA, that no one reads, but even making this plainly visible during purchase wouldn’t change much. I is not like the players have much choice when they want to play that specific game.