Is that the ultimate counterparty risk in your opinion? Node runners always have the choice to avoid software updates or other changes and the community at large can react to these threats by providing alternative software. What I'm trying to say is that counterparty risk is not something you can generally speaking respond to. If I custody my gold with bank A, and one day bank A decides that my gold can be lent to somebody without telling me, there is then for me nothing to do but to take note of this fact and suffer the loss.