Most Steam games are DRM-free in the sense that if you copy the game folder to another computer and add a stub steamapi.dll they'll run. Some of them will run even without steamapi.dll as they load it dynamically.
Games were licensed long before Steam. Heck, I remember buying a game in the early 1990's that would disable use of the floppies once it was installed to the hard drive. By the time Steam rolled around, registration keys with online verification were normalized.
Most Steam games are DRM-free in the sense that if you copy the game folder to another computer and add a stub steamapi.dll they'll run. Some of them will run even without steamapi.dll as they load it dynamically.
Games were licensed long before Steam. Heck, I remember buying a game in the early 1990's that would disable use of the floppies once it was installed to the hard drive. By the time Steam rolled around, registration keys with online verification were normalized.
Securom? StarForce?