Earlier quoted context omitted.
Where is that [0] reference? Because it is not $20B, but $10 / $12B. The range was partly confirmed during a trial where Google mentioned their percentage of profits paying to Apple as being default search engine.
Sorry, my bad I forgot to add the [0] reference: https://www.macrumors.com/2021/08/27/google-could-pay-apple-... (repeating that this is an analyst estimate/rumour so take it with a grain of salt).
To add some useful information to HN readers, Google has been paying roughly $10 per user to Apple for the past 8 years. So the growth of Google Default Search Engine placement has been growing steadily with Apple's active user. This exclude regions which does not use Google as Default Search Engine.
Unless there are dramatic changes in Google traffic accusation cost in their Quarterly report or going to make a change in 2022 ( Which I am not aware of ), that rumour is completely baseless.