In this psalm, "wealth" is seen as opposed to wisdom. The writer establishes his own words as wisdom and understanding, though he speaks a proverb and a riddle to those who hear. He frames this cryptically because it takes some work to cut through the layers of falseness that we surround our lives with. Those with wisdom will see his point; those with wealth probably will not.
Therefore, the psalm is an encouragement to those who are not yet wealthy to not become absorbed with the quest for wealth.
Instead, those who understand this point will find wisdom in the teaching of the sons of Korah. The pursuit of wisdom and understanding is where real value lies. Salvation is for the wise, those who trust in God, not for those who trust in themselves.
While the psalmist calls out wealth, we might see his critique more broadly. We might consider our lives, to see where we find ourselves distracted from the wisdom of God. We might pledge ourselves more to meditation on God's word, to obedience to him, and to service to others. Therein we find the wisdom that will save us.
Are you more interested in wealth than in wisdom? How is God speaking to you about those two things?