The Implications of Elsevier's Takedown Notices
The fact that Elsevier is sending out more takedown notices isn't because they've suddenly turned greedy. I'm sure they were always greedy. It's because they are no longer deterred by the downside (losing business because of trying to grab too much). That means that they don't think there will be much more business to lose. As a result they are milking their current portfolio as much as possible instead.
This might be a result of the Elsevier boycott.