80 years of video is being uploaded to youtube every day so do the math

80 years, or 700,000 hours.

At $10 an hour that would be $7m a day, $2.5b a year.

Alphabet's revenue is arround $144b a year, so it would cost 2% of revenue to review every single uploaded video. Clearly that's not going to be needed -- you only need to review those which

1) Have a claim by $BIG_CORP

2) Have a counter claim

I don't want to do math with flawed data. Every minute of uploaded content is not going to face copyright strikes, and does not need to be reviewed.