Bank are heavy on protecting reputation now more than ever. Getting involved directly in the MCA biz can easily set a bank up for a reputation black eye. Especially with litigation. One of the things that protects a small - mid size cash company is there is nothing really worth going after. That's (probably) why the only suits in this industry are against the big ones. Could you imagine lawyers chomping at the bit if say Wells Fargo overstepped usary in a class sized suit? eek.

It's also still a cottage insdustry. It's a tiny one compared to other financial stuff. Banks will make their money in it but will most likely stay one layer away. Even if the MCA space quadrupled in size it would still be tiny.