Yes. You are absolutely right. I view everything through the lens of economics. My view of success is making money. I don't think anyone has yet been able to make money without first selling records. That may come, but it has not yet.
It's not even that because you can be economically successful as a band without selling a single record.
Plenty of bands make a decent wage just by touring lots. To say no one does implies that you think of the music industry as only the top 0.01% of megabands. Unless you're a megaband negotiating an awesome contact odds are you will make most of your money from touring not CDs.