Gymnastic for the brain!?

Why can the banks not invest in one internet banking system? Imagine the quality, security and not at least ease of usuage. Because of my business and all the payments that we do for our clients I am for the moment, together with my private banking having to use 9 different systems! Let me tell you they all vary enormously. This morning I had to waste so much time figuring out how to change payee details on this particular banking system, even worse it made me feel so stupid as well! The only advantage I can see having so many systems is that it gives us good brain gymnastic and if you like problem solving your are in your element!