There is a difference though and that's the principle of a club having fans which most businesses don't.
I might like a certain company's products but if they keep upping the price for increasingly shoddy stuff then at some point I'm going to go elsewhere.
You're an Arsenal fan, you can't go elsewhere.
You can not go at all of course but right now there are enough people out there still willing to go. How long that persists of course remains to be seen. A trophy in the next couple of years and the mood will change.
A point I made earlier, but I offered a strictly business answer to someone who wants to talk in a strictly business sense.
If you don’t send this signature to ten people, you will become a Spurs fan.