I want to grab new rental listings and put them in an RSS feed, so I only look at each one once.
That's my uses for data scraping right now. If that destroys someone's business, I don't actually care. Maybe it's selfish, but my right to re-format data for my own convenience outweighs their right to make a profit.
At the point where I'm scraping, the data's on my computer though.
It's often in a business's interest to format data in a specific way to make money, for example interlacing it with ads.
Exhibit A
But it's basically the same question as adblockers: Can I do what I want with the 1's and 0's on my own machine?
I'm not going to accept that I owe anyone a business model.
But I'm going to assume that you have some level of a conscious and you don't really mean you could give 3 shits about someone else's hard work so you can have some satisfaction at home. Because at face value that's exactly what you said.