This is correct. The only reason people still do it is because it makes them boatloads of money, not because it is fun in any way.

I work in a bank and it's kind of fun.

Working in a bank and running a bank are slightly different I would assume

Totally. Working in a bank exposes you to the fun parts of running a bank, without the stress of it being your bank.

Let's hope (for all our sake) your work continues for a loooong time, fun and not-so-fun.

Until we all can self-bank!

That's why it pays.