You have not looked at the actual market. There are many people who have the cash but do not have the credit. Specific examples.
1. Ugly divorce where each side did things that destroyed the credit of the opposite. Later they person finds they are in a new relationship, they hold a good job, they save money but then events in the past hold back their credit.
2. After bankruptcy. Someone has a blow up. Maybe from a medical event. They have good income and savings but have a BK plus many write offs. They no longer owe the money but the credit score is low.
3. Cash based business person who never borrows money. Low credit score from few trade accounts but wads of cash (legal cash).
4. Immigrants. Manual labor or a high tech worker. Both can have significant cash reserves but not the ability to produce the needed documents plus 3 years of credit history in the US. Many friends who moved from the UK to the US fall into this.
John Corey