IP/trademarks/copyrights/etc.

This is likely going to be the main reason for the takedown notices, Sony will be exercising their legal rights in order to defend their trademarks & copyrights on Concord assets.

If a company doesn’t defend them vigorously, then any unlicensed works that are allowed to exist are then used as legal precedent moving forward to null/void such copyrights and trademarks.

As an aside, Sony is a global corporation and can likely choose to write down these losses in the most preferred region to maximise the tax offset - so likely either the US, or Ireland.