This is because you're not considering frequency and speed of material transportation.keldor wrote:What about nerfing standard train car storage too? It always struck me as odd that most trains in Factorio only have 1 or maybe 2 cars. Real life trains can have 100+ cars easily!
It's not unusual to have several trains delivering material to the same destination at a rather rapid speed in Factorio. It's unlikely you'll run out of material before another train is already pulling into the station. Speed bonuses from fuel make large trains even more pointless when any size trains can supply outposts at a fraction of the time. It also helps with keeping stations uniformly the same length for easy blueprinting regardless of what's being supplied/delivered.
Compound that with actual trains which can take several days or weeks to get to its destination due to their slow speed, their costs to run and maintain, and material consumption speed or storage capacity at the destination location. Then trains being 100 cars long makes more business sense.