Its tsmcs chip not apples though, anyone can up and order something of those sort of specs from them and meta has plenty of money to wave around at a crowded bar for attention.
TSMC is a fab, not a chip designer. Apple designed their own chips with in-house engineering talent. Due to how the silicon supply chain works no-one but TSMC can make those chips so everyone needs to use them. Also Meta can't just waive around money and get the most advanced chips; apple has bought out all the production for some time.
You really think if it was that easy to compete with Apple's SoCs, Google wouldn't have done it long ago for the Pixels? Or someone in the Android space would step in to compete with Qualcomm's Snapdragon chips? Samsung hasn't been able to do it for years with their Exynos line.