I can imagine some companies wanting that data to be accessed in a specific delivery format (i.e. with branding experience attached). Also might be concerned a

I can imagine some companies wanting that data to be accessed in a specific delivery format (i.e. with branding experience attached). Also might be concerned about inaccuracies from variable pricing models for example. There’s a few reasons why you may not want it accessible - hence one of the reasons why CORS is even a thing.