Solution: They protect some software purchases - NYT Crossword

This pair runs side by side for a few rows, and both entries have a retro element, if you define retro as any time before people received data from thin air. For 9D, [They protect some software purchases], I thought of licenses before I landed on CD CASES. Some of us will remember how impenetrable those little boxes were, protecting discs that were once worth hundreds of dollars but are now used mainly to keep birds from eating your raspberries. 19D, [Early Netflix offering], solves to DVD RENTAL. Those came in red envelopes that arrived in the physical mail, and more than 5 billion of them were shipped over about 25 years before the offering ended in 2023. Some of us may still have some in a (slightly chaotic) drawer, but that’s allowed.