Earlier quoted context omitted.
I'm not stealing anything by instructing my computer not to run code against my consent. No one is entitled to my CPU time. Least of all are advertisers. Also, the store isn't freakishly stalking me and noting down all my habits whilst sharing what it has collected with its friends, or indeed anyone who will buy the data. Besides, candy is impossible to replicate in the same way that data is. Theft of physical object…
The person you're replying to is not accusing you of stealing, they are using stealing from a candy store as a metaphor for how a certain amount of behavior that a company doesn't like is tolerated because it is not worth the effort to stop. The point is that Google could prevent most people from using ad blockers any time they wanted, but don't view it as worth the bad PR (or choose not to for other reasons).
Nobody frames, say, taking a bathroom break when the ads play during a football game this way.