This is going to be important for maintaining the legacy of old video games.
Like, emulators are fine, but access to recompilation makes it much easier to keep things in a generally useful format.
Honestly one of the reasons I don't play emulated games much is that the extra step of configuring and running the emulator is a hassle, and sometimes it straight up doesn't work.
Edit: Anyone who thinks access to the source code is somehow worse than the original executable code, just ask yourself, what is the legacy of say, Doom, for which we have access to the source, versus literally any other closed source game of that era that requires DOSBox to be run? Doom is a meme that "runs on anything" and has a thriving modding community, and it's hard to think of examples of DOSBox games because you never think about them. Source code is important.