Don't Starve Together scratches the MMO itch for me. It's not an MMO, but there are public servers where you can hop in and hang out, raid bosses and whatnot. I have ~4k hours in it now.

Valve does seem to contribute substantially to the development of their games, at least. Turtle Rock's Evolve and Back 4 Blood had nowhere near the success of L4D/2, which is still going strong 15 years later.

As the other commenters have mentioned, this is part of the shell configuration and outside the scope of the terminal emulator.

You can configure this yourself by adding shopt -s histverify to your bashrc.