Is Monero ready to be used commercially?
This certainly occurs, but in general, today, XMR sees first-order use as a speculation (store of value), second-order use as a transmission channel (medium of exchange), and only third-order use in denominating commerce (unit of account). Due to being the most fungible of all currencies, many proponents deem, and I among them, that it is better suited to many commercial uses than any other candidate currency - specifically, those use-cases in which deviations from perfect fungibility impose cost or risk.
Would anyone care?
I would, and would be quite pleased. Certainly I would be more inclined to do business with you on that basis than otherwise.
All unbound currencies (informational commodities) have a value bootstrapping challenge. Fiat currencies derive value from taxation, but free-market currencies gain utility from being valued, and gain value from their utility. Inevitably, this is a cycle: when the technology is apt, a virtuous one; otherwise, a vicious one.