The whole point is that when I think about bitcoin, the only people I know who admit to make money out of it are gamblers and speculators.
And their final goal is to use bitcoin as a temporary method to increase their fiat money. That is a symptom of failure.
Small companies like shops are really skeptical and some of them declare to have lost money by accepting bitcoin,
If real and honest work is being exchanged for bitcoin, for me that is a symptom of success.
Exactly, especially when a business needs to pay for things such as tax they will need to hold enough fiat to pay that of along with other costs that arise.