I wish I made $5 for every GC I had. :P lol
The caps are as follows:
Food - 100
Ore - 10,000
Raw Materials - 3
Consumer Goods - 4
All Minerals - 1,000
Raising caps is pretty dumb, but CG`s could still be useful at cap 5, providing they give you more income per turn (so to speak). Food`s cap is just ridiculous (and yes, I`ve seen it capped out before). Min caps are perfectly fine. RM is never gonna go high, lol. Ore is a bit overpriced as-is. As it stands, you pay at least 3x the ship cost in minerals (unless you`re maru, lol), making it more would just make the game feel unbalanced towards newbies.
I say leave the caps alone, unless you wanna lower food to 20 or so (whenever miners stop making profit, don`t feel like calcing it) and up CG`s to 5.