Sites have a right to try to block scrapers. Scraping can incur significant costs and users may not want it - as a LinkedIn user, I want my profile to be indexed and able to viewed without logging in from the Web, but I also don’t want my entire profile scraped and resold/rehosted for marketing. It’s also often the case that the website put in significant working acquiring/curating/cleaning their data, and they are being scraped by other commercial entities trying to just resell it (blocking that isn’t being greedy, the data is basically being stolen for other commercial entities). So it’s not just being greedy.

Individuals also, IMO, have a right to sell access to their network for scraping-via-proxy. But they should be prepared to deal with the consequences, like a potential IP ban. Most people using VPNs that resell their residential network for scraping probably don’t know that’s happening, and many scrapers are indeed doing something bad, which is why there is a disdain for the practice.