The change was made to address an issue where people who had already purchased a license, and was viewing the product information page within the context of their own license, would see renewal pricing even if they owned a lifetime version.
In the next version, I've changed it so that the main pricing block is always displayed if no license context exists. If a license context exists, and there is no pricing information (because they own a lifetime license, or they do not have permission to purchase), the sidebar block will be hidden.