[xurbax]

Don't they? Surely they make some interest on the money if it is parked for any length of time? Plus transaction fees and such? And individuals probably get bonuses etc. based on volume in some way? (IANAB(anker), just wild guesses here.)

[emmanuel_1234]

Late reply, sorry.

They do, but it's nothing compared to what they make loaning money, which is their (and any banks) core business.