Ethical Q -- Soft-playing opponents

I was playing 10-20 hold'em this weekend and ran into a somewhat annoying situation. Three friends were sitting next to each other, and they would check down every hand after everyone other than the friends folded. In one hand, I was in the big blind. One friend raised, another reraised, and everyone, including me, folded. The two friends then checked the hand down.


I would have been more annoyed if I thought something intentionally untoward was going on, but it wasn't. Both of the friends had legitimate hands (I think it was AK vs. JJ), and I don't think the friends realized that what they were doing could be seen as unethical. I didn't say anything, but should the dealer have done something?