Coordinated opposition campaigns against misinformed and dangerous legislation has been effective in stopping bad laws [1]. After a website blackout, including a Wikipedia shutdown, lawmakers in Washington decided not to proceed with the Stop Online Privacy Act in 2012.

[1] https://en.wikipedia.org/wiki/Stop_Online_Piracy_Act

From your linked Wikipedia articles many corporations including Google were part of that opposite campaign. Exactly the type of people donating untold millions to our legislatures. Had nothing to do with any kind of grassroots pressure.