Power BI Custom Visuals - Enable FileDownload API for PowerBI Embedded

According to the documentation: https://learn.microsoft.com/en-us/power-bi/developer/visuals/file-download-api#the-exportvisualscontentextended-method

The IDownloadService.exportVisualsContent api is only available in the service and desktop.

Considering this is a tenant setting that has to be enabled, I don't understand why this limitation exists. It blocks us from making a true custom visual for our reports.

Considerations and limitations

• The API is supported only in the Power BI service and Power BI desktop