When prominent clans develop to a certain stage, capital is no longer a significant concern; what matters is the ability to operate and control that capital. You may have billions in funds, but it might not match someone with only a few billions, and why is that? Because the other's capacity to maneuver and control capital is stronger than yours. They might have only a few billion in terms of capital, but they can mobilize hundreds of billions, overpowering you directly.
Beyond capital operation, there's also social status and influence, which is another aspect that prominent clans compete in. Moreover, there's another crucial element, which is the number and quality of Martial Artists they support. This is one of the hard indicators for a prominent clan. It's somewhat similar to the late Ming and early Qing dynasties when some high officials liked to sponsor Jianghu experts for fun high-level confrontations, to suppress the other side.