This story has been played out numerous times already. Anthropic (or any frontier lab) has a new model with SOTA results. It pretends like it's Christ incarnate and represents the end of the world as we know it. Gates its release to drum up excitement and mystique.

Then the next lab catches up and releases it more broadly

Then later the open weights model is released.

The only way this type of technology is going to be gated "to only corporations" is if we continue on this exponential scaling trend as the "SOTA" model is always out of reach.