No. Once his own costs reached a limit where he had to settle, the other side would have had similar if not greater legal costs racked up. Continuing at that

No. Once his own costs reached a limit where he had to settle, the other side would have had similar if not greater legal costs racked up. Continuing at that point is a double or nothing bet, which might make sense if the odds are in your favour (i.e. you think you'll win) and you can diversify over many such bets. But for a single individual in a single case, it's a huge risk.