I am really confused, why are you assuming people that are vocal about this continue reviewing for Elsevier (or assuming this about me in particular)? This is simply not happening. Is it really that surprising to you that only part of a community is working on the social problems in the community, while the rest is focusing on their main work: science.

This is a general attitude among every naysayer against progress: "you can not demand that society changes for the better if you are active part of society". Do you not see how ridiculous that is?

And you were already given examples of prestigious journals that have transitioned to the open access model. And universities that boycott elsevier. And grant agencies that demand work to be published open access. What more do you want? For this to have happened last decade? Well, things take time.