If there are multiple potential buyer roles there is a way to disclose all answers. The default Q&A setting is displayed in the left image. The 'Disclose to All' setting is displayed in the right image.
The Disclose to All feature can only be enabled before the start of the Q&A process.
The names of the Question Submitters will be anonomised for the other potential buyers.
Be advised that the 'Follow-up question' feature will be ignored if the 'Disclose to All' feature is enabled.