The Tri-Vision Starfield, the Myriad Monarch Astral Territory, the Bloodforge Continent, there was one thing that these places all had in common: they didn't lack resources. The truth of the cultivation world was that resources produced faster than could be used, and this was regardless of reckless waste by cultivators. Despite this, there were two types of resources, those that could be classified as gentle and easy to absorb for cultivation and those volatile and difficult to absorb resources that required long-term processing to be effective.
The majority of resources fit the second type. While the higher one's talent and, depending on the cultivation method, some resources of the second type shifted to the first type, providing immediate benefits on what could and couldn't be used, it didn't solve the issue for the majority.