Does that really matter? Source Engine was never really open source and never really on a continuous update schedule. Anyone with a vested interest in using sou

Does that really matter? Source Engine was never really open source and never really on a continuous update schedule. Anyone with a vested interest in using source would have obtained a license for it anyway as it's always been non-free, and that license would presumably have terms for what you do and don't get access to. But you can apparently hack around with Source 2 by using The Lab's Robot Repair (Source 2) as a mod base and use the Hammer 2 tools from DOTA 2. So... technically yes, you could play with it. Just maybe not easily, and maybe not entirely intentionally.