The code is open source: https://github.com/apple/security-pcc
That's not how the deal was announced. You don't pay Bs / year for a licence to gemini to send them your data. You pay that to run it on your own hardware, in your own garden, so the data stays put.
I know the internet is always anti big companies, but this is likely a "not worth it for now, we'll eventually do it" effort from Apple. The EU AI act is a mess, and the effort to simply know what they have to do to comply with it is likely going to take armies of people (not devs) and a lot of time, as the OOP said.
And the saddest part about it, is that Apple has the money and resources to sink into this. Think about all the small players that don't. This is yet again a miss for the commission, with the end result being an insidious form of regulatory capture. It sucks for those of us running small companies. Oh well.