Column does not offer many of the options that other bank providers do, is fairly expensive, and may not have been in existence when Mercury chose their vendor.

Column does not offer many of the options that other bank providers do, is fairly expensive, and may not have been in existence when Mercury chose their vendor. Evolve is not a "random obscure bank" - it is a bank that pivoted to have a main business model of providing b2b platform banking instead of consumer banking. The major banks don't get into this game because the regulations on banks get much stricter the larger you get. So the fintechs are incentives to partner with "small" (this means sub $50 Billion in AUM) banks to deal with the minimum amount of necessary compliance (still a LOT of compliance working with small banks)