"Apple is concerned that AI tools could leak the company's confidential data"
WOW... if your IQ is under, say, 90, surely you have problems creating prompts NOT having anything project/company-specific. But not for anyone with higher IQ - and that's the VAST MAJORITY of anything non-third-world country.
I too use GPT-4 for programming (it REALLY speeds up everything!) but make absolutely sure no confidential info is left in any kind of code / questions I post as prompts.
Apple shoots themselves in their foot as they're now reducing the effectiveness / speed of their coders.