Because the content they show is literally the content the sites explicitly set up for the sole purpose of “if you link to my site, pretty please show this preview to make our link more attractive”. The idea that they owe a royalty for showing the content sites are explicitly asking them to show is completely indefensible.
Them and Facebook always pitch a fit when a government tries to make them stop doing that lol
Because the content they show is literally the content the sites explicitly set up for the sole purpose of “if you link to my site, pretty please show this preview to make our link more attractive”. The idea that they owe a royalty for showing the content sites are explicitly asking them to show is completely indefensible.