I doubt a movement of the people from the outside will work this time when all of the capital is in the other peoples hands. We need at least some of it held by someone with the opposite view to make the movement credible. And I dont think VC and IPO dynamics are compatible with this.
If you are already thinking of quiting, you can organize and internal movement and use the power of your labor to steer things. One person quitting is nothing for the company. The risk of big group quitting at the same time on the other hand... The labor is the only thing the company cares about. So we cannot wait until we are all replaceable by AI and we lose that leverage.