SoFi is currently struggling with selling what mortgages they have already originated. Unless they are going to build from the ground up a mortgage bank and scale it to over $10B a year, they will always be a niche player. They will completely collapse their enterprise value with the amount of capital required and the contingency risk they take on to be a truly large player in the mortgage business. Quicken is a better example of a firm that purports to do resi loans online.