I don't think that simply the ability to perform a task is sufficient for competition. It could still be impossible for a newcomer to compete with established corps' marketing budget and economies of scale.
The point is who cares. Getting a burrito delivered is a pointless luxury service that no one actually needs. Instead of complaining about competition, just stop wasting money on it.
You don't care. That's fine. It's not like there is a retirement to be informed before commenting. Sit this one out and let everyone who do express their concerns.