The USB Type-C interface charges fast, why does Apple still use the Lightning interface?

In the mobile phone market, it seems that the USB Type-C interface of mobile phones has become the mainstream of the market. This year, iPhone 12 was launched, but Apple mobile phones are still using the lightning interface. In terms of data transmission speed and charging speed, the USB Type-C interface is three points better than the lightning interface, and Apple’s delay in facing the fact that the USB Type-C interface is replaced has also led to the charging speed. There is a clear gap. Even though the Android phone has increased the charging power to 120W, the Apple mobile phone is still 5W slow charging. So since the USB Type-C interface is better, then why Apple has not followed up? Three reasons are critical.