why ?
See the Quest 3. Before the AVP people were saying $500 is too expensive for a VR headset, but the Zuck can now advertise it as a AVP alternative that's more functional and also 7x cheaper than what the AVP offers for the money, now that Apple set the market price point.
Apple joining the club is a win-win for the industry players and the consumers.
It also didn't help that it was released near the end of the Quest 2 life cycle and people could predict that a more consumer friendly version would be released in the near future. The Quest 3 was announced ~6mo later and released a year after the Quest Pro.