What is the motivator of the primary gameplay loop? If I never have to make a hard decision on how to use an earned resource then it devalues my autonomy.
Even in similar games like Dyson Sphere Program, you can play with cheats on (infinite or free resources) and but it's still a challenge to scale up production.
For me, it's about my intrinsic motivation to come up with cleaner/simpler machines that are nonetheless efficient. MAMs ("make anything" machines) are a pretty damn fun challenge to build efficiently.
I still run out of resources, but typically by that point I have enough stuff that creating mining outposts is trivial, and in fact significantly better - I get trains full of raw ore, iron plates, and steel instead of having a big chunk of my primary factory devoted to processing that stuff.