FWIW, I don't consider being in the blinds to be pot-committed. I view your blinds as money that is not yours anymore. So it's a question of position/holecards/and pot odds
Very rarely do i play a hand in sb/raised bb, that I would not play in any other position. The exception might be every once in a while I'll limp in with a A3s type of hand. Say I'm in BB for .10, and it's been raised to .20, with 4 ppl besides me in the hand.. I may limp in because of the implied odds if I hit my flush.
The only instance I can think of that would make you pot-committed is if you're short-stacked deep in a MTT. Where the blind is like 50% or more of your chips. It may be worth going all-in preflop if you have a face card.. or just go in blind.
Anyway, I think it's best to never think of the blinds as "your money".