I run a large scraper farm against several large sites. They're not online shops, and we don't compete with them. But they do have hundreds of thousands of data points that we use to provide reports and analytics for our clients, who also do not compete with the sites.

I absolutely would pay for an API that provides that data. I'd be willing to pay 10x more than the cost of maintaining and running the scrapers.

But the sites being scraped have no interest in that.