I would say the consolidation of small banks into the big banks has fostered this more the people want to admit. Since banks like Wells Fargo bought up local o

I would say the consolidation of small banks into the big banks has fostered this more the people want to admit. Since banks like Wells Fargo bought up local ones, the equality distribution changes dramatically. Wells Fargo wants the big players while that little bank wanted local players. This causes the market to lack marbling in competition while creating a massive group think economic bubble.