It's not that the major sects lacked the financial strength, but rather that a major sect would not invest all the resources capable of cultivating numerous Golden Core cultivators into a single disciple.
If they truly did that, I'm afraid the major sect would not be able to sustain its legacy for many years.
This also indirectly confirmed that Li Yuan Ba was indeed the reincarnation of a Buddhist power, for only the reincarnated could possess such an abundance of Third Grade cultivation resources at this level—a legacy from a former life.
This is not to say that Li Yuan Ba had recovered the memories of his past life, but rather that the reincarnations of powers would seal some resource memories according to the realms they reached, unlocking certain memories once they attained a particular realm to retrieve the legacies from their past lives and restore their strength.
