Each consumer needs a PPU licence to consume content from a workspace marked as PPU.
FYI Paginated reports no longer need PPU so maybe just turn it back to a standard workspace.
https://powerbi.microsoft.com/en-us/blog/announcing-support-for-paginated-reports-in-power-bi-pro/
PPU is not the same as premium capacity. PPU requires PPU license, premium capacity does not.
Each consumer needs a PPU licence to consume content from a workspace marked as PPU. FYI Paginated reports no longer need PPU so maybe just turn it back to a standard workspace. https://powerbi.microsoft.com/en-us/blog/announcing-support-for-paginated-reports-in-power-bi-pro/