Given Google made 17 Billion dollar in Q1 2021 [0] in Europe/Africa/Middle East, I would say that around 2 Billion dollar would be more appropriate.
Facebook made 6.5 Billion dollar in Q1 2021 [1] in Europe, so maybe around 1-1.5 Billion dollar.
[0] https://businessquant.com/google-revenue-by-region (Didn't find a better source or one that lists the revenue for France only)
[1] https://www.statista.com/statistics/223279/facebooks-quarter...
Edit: I tested the banners:
Facebook: "More Options" -> "Allow only essential cookies" (1 click more than necessary)
Google: "Anpassen" -> Switch off "Suchanpassung" -> Switch off "Youtube-Verlauf" -> Switch off "Personalisierte Werbung" -> "Bestätigen" and then there are 3 seconds of delay with progress bar. (4 clicks more than necessary + delay). This delay does not occur, if I simply press "Accept all"