The legality is complicated, the tech challenges are hard, and, to be honest, it just feels a bit off to profit from other people's work without giving back to them.
Question for you - why do you care what people think if you're making $4.9m profit a year?
5mil/yr on 100k/costs sounds pretty interested to me ... what exactly are you complaining of? Not enough API users? When I click your API tab, it just has a “contact for pricing” pop up. You’d probably get more interest if you had open documentation/some examples of use cases/upfront pricing.
The fun part is knowing you are being scraped and adding tagged data values that you can scan for elsewhere on the web to see where your scraped data is going
Says who? I particularly enjoy it and find it extremely entertaining and a great opportunity to brush up my skills, while making some money in the process.
Question for you - why do you care what people think if you're making $4.9m profit a year?