Yes. If it is a personal vehicle I would pull them out.
Equpiemt I carried at all times in my dodge:
2 transport grade hardened tow chains (20' long each)
one 15k lb recovery strap
one 60k lb recovery strap
one 2k lb hand winch (never used it)
Misc hardware including a snatch block, extra hooks and chain menders.
Tree saver strap (never used it)
Snow shovel
Sand
a bunch of cheap work gloves.
Tool kit.
Equipment I always carry in my Zuk:
1 transport grade tow chain
one 15k recovery strap
Misc hardware including hooks and chain menders
Work gloves
Tool kit
When I went out when it was snowing in either vehicle, I would toss in a few boards, a snowshovel, hand warmers, good gloves, and sand if I did not already have it.
I did it for fun, and because I am a nice guy. When it snows I actualy have a route that I patrol to pull people out ( there are certain spots where EVERY snowstorm some idiot slides off the road.) When I see someone, I ask if they need help. If the answer is yes, I offer to pull them out, but I am not responsable for any damage caused by me, my truck or my equpment. I warn them that the chain can break and maim them or their car. If they understand and agree, they get pulled out. I do not ask for money, but I usually get offered anyway, and I take it. (average offering seems to be $20) I had one guy 2 years ago give me a hundred bucks because he said AAA said it would be 3+ hrs for a truck
If it is a comercial vehicle (meaning large) and It hink I can pull it out, I offer to do it, but only if he agrees and pays me. If i can not get him out, I do not take any money. (only happened once, and it was a Schaumburg plow truck. )
Tips / hints, etc:
If the person is an ass, he/she gets left there.
If they get annoying, they get left there.
If they can not follow directions, they get left there (very very important they can follow instructions.)
If it is an extramly expensive car, it gets left there. Just because I do not want to get sued if I destroy a porshe or somehting (never came up yet)
If they offer you money, take it.

If they offer services, do not forget to take them up on it (I have a guy who owes me a deal on a car. he works at a dealership. I still have his card

)
Carry tools to extract yourself (hand winch in this case. they are $50 for a 2k or $75 for a 4k model from Home Depot)
Have a good pair of work gloves (split leather seems to work well in the snow)
That should be about all.