Denamic said:
They couldn't afford to force a response from Alliance. By the time they would have gotten the mid barracks, Alliance would have gotten their bot and top, and would still be able to TP back home to defend the ancient. That would have been a clear loss for NaVi. TPing back to defend was the correct response by them, but they made a huge mistake by TPing so close to Alliance's base, a mistake s4 made the most of by interrupting Enigma's TP and delaying the other's with a perfect coil. That was a clear game changer and I'd argue that it was the moment NaVi lost. s4 later sealed their defeat with two more TPs interrupted, but by that point, I don't think NaVi could have salvaged the game even if they got back home, because they were already slapping the ancient. Even if they'd manage to beat them back, they would never be able to move out of their base, or NP would just push into their base and Io would have ported in with CK to kill off the ancient.
When Na'vi took the mid rax, they still had both their towers up. That's why they thought they could TP back to defend. But when s4 stopped their TPs, in the time it would take for them to run back to base, they were guaranteed to lose both rax already. There was no way they could stop the push without every member of Na'vi back. By going straight for throne, they'd either force Alliance to go for a base race, which Na'vi would win seeing how much damage PA was putting out, or ALLIANCE would TP back to defend, which would result in two ways:
1) Alliance would abandon taking the rax to TP back immediately, which would put Na'vi out on top because their rax was still standing.
2) Alliance would take the rax and then TP back to defend, which would also put Na'vi on top, because the tier 4's would be dead or dying, allowing Na'vi to do what Alliance did at the end of that game and go straight for the throne.
Alliance didn't have the damage or the lockdown at the time to beat Na'vi in a straight base race. If Na'vi had pushed instead of running back to defend, I'm 70% sure they'd have won instead.