Fair Isaac is upending the credit-scoring industry by giving mortgage lenders a way to get its credit scores without buying them from Experian, Equifax or TransUnion. The change is among the biggest shake-ups to the credit-scoring system in decades, reflecting regulatory scrutiny in the second Trump administration. Earlier this year, the Federal Housing Finance Agency authorized lenders to use FICO rival VantageScore—built by the three credit bureaus—for government-backed mortgages, challenging FICO’s monopoly over the $13t mortgage market for the first time.