INGLEWOOD, Calif. — The NFL is big business — a multi-billion dollar enterprise. And in big business, it’s not the smartest or the richest or the oldest that wins. It’s the most aggressive. The 49ers need to take note before it’s too late and their Super Bowl window closes. On Sunday — and in the weeks and months leading up to the NFC Championship Game — aggressiveness was the difference between the Rams going to the Super Bowl and the 49ers watching it at home like the rest of us. There were little things that played out in Sunday’s contest — moments of passiveness — that snowballed into some…