What this boils down to is incentives. Most of the issues with copyright that bring on legal action come from sites that aggregate data which they did not creat

What this boils down to is incentives. Most of the issues with copyright that bring on legal action come from sites that aggregate data which they did not create, and then market in some way to make advertising revenue off of it. Sites that aggregate and repost news stories, for example, fall under this category because they end up taking advertising revenue from the sites which they draw their content from. Content creators in this area will then aggressively go after these sites because they hurt the bottom line. On the other hand, your concept sounds like it would draw business to this industry, so the incentives may very well align with the very companies whose data you are scraping. I worked on a concept for a startup where we had similar, but in our research we never had any issues come up because our aims were aligned with the providers of the data that we were scraping.