Do you have a business problem you're solving with what you've built? If you're new to marketing, what was the motivation behind creating this?

Generally, within marketing you need reliable data that can support audience segmentation, market research, targeting or advertising.

The restaurant scenario may be good for a sales person, but they would want more information like the owner/manager of the restaurant, details on foot traffic etc. so they can 'size up' a target customer for a 'sales call'.

That said, bsed on the data quality disclaimers you noted, it seems the data may not be practical for real world use-cases due to scraping restrictions.