If you're not willing to fight for your second inhibitor, please forfeit.

The circumstances are simple. You're behind, you haven't cracked their inhib towers and they've already taken one of yours plus it's inhibitor. When they come knocking on that second one and if you aren't willing to defend it, please quit wasting my time and vote yes to surrender.

The odds of coming back from two inhibs down without taking one of your own are so low that it's pointless. They would need to massively throw and frankly, with two inhibs in today's game, that's becoming increasingly hard to do. All they have to do is take baron because you can't contest it. Then they stand on top of your third inhib tower and let baron minions and super minions do their work. The siege will eventually take down your third inhib tower and once that happens, you aren't winning. In the five and a half years I've played, I can count on one hand how many times I've won a game where we've had all three inhibs down and each one involved either a DC, a complete and total throw that felt borderline intentional or simply put, extremely poor play. And that was all in low plat/high gold.

Fight for your base otherwise surrender. The game basically wins itself after two inhibs under most circumstances. If you have taken an enemy inhib then it's not so simple but if you're relying on "just scaling," it's never gonna happen when you're that far behind without you proactively making something happen.