This is definitely an issue, my org of 10 people has been visiting safe zone moons and planets and coming up empty for T3+ ores on nearly all of the tiles we've scanned so far. When we do find deposits they are very small, maybe 3-5Kl nodes that nobody else wanted to spend a great deal of time or effort to dig up. We're moving to Warp Drive gameplay, which requires a lot of T3 resources and they have been incredibly hard to find. Without renewing resources, the economy loses lubrication and starts to grind to a halt, meanwhile prices even for basic things begins to skyrocket due to market supply not being able to meet demand anymore because travel becomes limited along with the resources. Without renewable sources of materials or a TRULY vast amount of static resources, it's inevitable that the economy and gameplay of the simulation is doomed to failure. And it could happen way faster than you may assume as the playerbase grows and the speed of mining the resources accelerates.