Yep, I didn't think they'd actually do it, but they fixed this unfair discrepancy between retail and steam versions of the game:
UPDATE NEWS: "Half-Life 2
Solved disc in drive incompatibility error by removing Securom disc check routine"
(looks like perhaps they had to do it to solve an incompatibility issue, or at least justified it)
LINK
I tested this out using my CE DVD version and it is indeed true.
I didn't see any post here on AT on this important HL2 news...
UPDATE NEWS: "Half-Life 2
Solved disc in drive incompatibility error by removing Securom disc check routine"
(looks like perhaps they had to do it to solve an incompatibility issue, or at least justified it)
LINK
I tested this out using my CE DVD version and it is indeed true.
I didn't see any post here on AT on this important HL2 news...