shmerl: That's not true, there is no "standard for years to come".
Valve's Steam Runtime is based on Ubuntu 12.04 LTS and they explicitly state that developers should build on and for Ubuntu 12.04 LTS, so they run flawless on Steam.
Valve themselves disprove it, they use Debian for SteamOS, not Ubuntu.
While SteamOS is customized/forked Debian, the games still run on the Steam Runtime, which is a stripped Ubuntu 12.04 LTS. They know what they're doing and how important binary compatibilty is.
Steam is not a standard by any means and should not be.
The Steam Runtime
is the future de-facto standard for Linux gaming, if you like it or not.