This assumes the new version of the software has no added value from adding new features and fixing bugs, etc. Even with your assumption suppose you accept the

This assumes the new version of the software has no added value from adding new features and fixing bugs, etc. Even with your assumption suppose you accept their offer. The $80 received should in turn be able to purchase something that was worth $100 dollars yesterday. The nominal value may have gone down but the quantity of goods and services you can buy with it is the same.