I don't think any power-elite author would remove their account from ThemeForest, just to make a statement. Considering the amount of $$ they are generating on a daily basis, this would just be a plain stupid business decision.
However, I see the gathering of a solid team of quality authors teaming up to create a new marketplace like something very realistic. Stocksy took a lot of share over iStockPhoto for very similar reasons where authors felt the conditions were just better.
I am sad I am even writing this. I used to love envato and always speak very highly of anything they do. I would get aggressively defensive over anyone saying bad stuff about anything envato related.
I still have a lot of respect for the way envato contributed in making me a full-time front end developer feeding my whole family (not from earnings, but from the tuts+ site where I took my first steps, to the phenomenal exposure being an author on TF brings to authors.
I actually have been hand picked by the art director for the company where I currently work near full-time. They found my account on ThemeForest, saw my location and decided to have a chat.
I owe a lot to envato. A lot or respect, and gratitude.
But I think envato owes me the same. They owe every single author a lot of respect and gratitude. We all contributed, at different levels, to creating this envato marketplaces empire.
I want to continue speaking highly envato. Right now though, to be honest, I don't feel much respect is given to authors, and I am not very confident about where the
2020 plan is taking this community.