^ This is what I'm saying. Big projects aside (these are temporary), you're not using your resources to rebuild your fleet. He's just using MKII Harvesters, imagine how much money you would have if you were using MKIII?
I feel like we're playing a different game. I play on difficulties 8-9, with Advanced Hybrids on, and resources past the mid-game are never a problem. If I lost it's not because I'm out of resources, it's because my defenses were too scarce, or my fleet wasn't effective enough to hold off some major assault.
I DO spend most of my resources on my fleet. Rarely do I unlock any turrets. I always unlock MKI Gravity Turrets and Heavy Beam Cannons...that's like 1250 Knowledge? Sometimes, I MAY unlock MK1 Fortresses...but everything else goes into Fleet Production.
Resources are not that big of a hindrance in rebuilding your fleet. When you're making, on average, 2,500 metal and crystal per second, you would have to be losing your fleet CONSTANTLY to ever run out of resources. With that income (which is average for having MKIII Harvesters), it takes about 6 and a half minutes to go from zero resources to full.
Let's break it down:
Every 6.6 minutes, you have full resources.
Average AI War game lasts 10 hours or more.
You don't use 999,999/999,999 resources unless you've literally lost your entire fleet.
So if you want to honestly tell me I'm supposed to be losing large parts of my fleet every 6 and a half minutes or so, I'd say you've either got godlike micromanagement, you're an extremely wasteful player, or that you have no idea what you're talking about.
I'll go with option 3.