Spelling components are consumed only when they are explicitly indicated.
If you launch the ban every day for 30 days at the same place, the spell lasts until it is dispelled, and the the material components are consumed during the last casting.
bold = condition, italics = consequence
The wording is pretty clear – "If X, then Y and Z". X launches it daily at the same place for 30 days, making the spell permanent and the hardware components consumed.
If you do not put the ban on it for 30 days and you stop earlier, the components will not be consumed.
Of course, you can say that the sentence is ambiguous, but D & D 5th is not as logical as previous editions. He uses a regular English language and it would be foolish for the material components to be consumed before they become permanent. Otherwise, a single casting could be considered a 30-day progression, which means that the components would still be consumed.