To do a crawl across a meaningful percentage of the Internet and refresh this every 24 hours is hard enough even if you only capture the front page. Very few sites include stripe.js in the source on the front page. So you would need to crawl deep enough into a site to hit the checkout page and capture stripe.js in the head section which is exponentially more difficult.
Indexing your crawl and passing this off to a team to extract contact details and send it to a client so they can reach out all within 40 minutes I would say is nearly impossible. It is possible they already had his details but I cannot see anything on his site that would trigger a "likely to switch payment gateways" alert.
My guess is this was completely random. A good sales rep will make 60-100 outbound calls per day along with a bunch of emails. Multiply this by the number of outbound sales reps in the payments market and you have a lot of sales activity.