One for all and all for one 6

I don't remember if this has been discussed before, but here's the issue: I played a game against an opponent, and we spent 9-10 hours in real time. In the end, the opponent refused to continue, and the results are recorded as zeros in the table. However, I feel it's unfair that I spent so much time on a game that ultimately went nowhere. Should there be any penalties for players who do this?