There won't be much of an experiment per se. In practice it will quickly devolve into a few big players that control platforms people use so that they can continuously access new training material.
So microsoft, Apple maybe and Facebook and possibly but probably not Twitter (since we just learned 80% of the accounts on Twitter are Russians and bangladeshies pretending to be American conservatives) will continue to thrive because they will be able to tell the difference between a bot and a human being thanks to their control of the platform.
Everyone else was just accessing free training data goes tits up soon. Some of them will be bought out.
In addition to devastating the job market and devouring electricity and water AI is also going to result in huge monopolies because it's a technology that lends itself to monopolies inherently.