>>51847985They wouldn't decomission anything, they'd just make them more collectible. Dual lands in MtG cost hundreds each but lots of people go after them.
To be honest, there are so many BEWD commons in circulation, that even if you stop printing now, there will never be an actual shortage. Worst case scenario a BEWD common could cost $30 20 years after they stop reprinting the card. Also, pic related could happen even after reprints stop.